But this all men knew about him: that he combined within himself the courage of a Hannibal, the military genius of a Napoleon, the ideals of a Sun Yat Sen; and that he had sworn to himself he would never rest until the earth was peopled by a single nation, with Moyen himself in the seat of the mighty ruler.

Madagascar was the seat of his government, from which he looked across into United Africa, the first to join his confederacy. The Orient was a dependency, even to that forbidden land of the Goloks, where outlanders sometimes went, but whence they never returned—and to the wild Goloks he was a god whose will was absolute, to render obedience to whom was a privilege accorded only to the Chosen.

In a short year his confederacy had brought under his might the millions of Asia, which he had welded into a mighty machine for further conquest.

And because the Americas saw the handwriting on the wall, they sent out to see the man Moyen, with orders to penetrate to his very side, as a spy, their most trusted Secret Agent—Prester Kleig.

Only the ignorant believed that Moyen was mad. The military and diplomatic geniuses of the world recognized his genius, and resented it.

But Prester Kleig, of the Secret Service of the Americas, one of the few men whose headquarters were in the Secret Room in Washington, had reached Moyen.

Now he was coming home.

He came home to tell his people what Moyen was planning, and to admit that his investigations had been hampered at every turn by the uncanny genius of Moyen. Military plans had been guarded with unbelievable secrecy. War machines he knew to exist, yet had seen only those common to all the armies of the world.

And now, twenty-four hours out of New York City, aboard the S. S. Stellar, Prester Kleig was literally willing the steamer to greater speed—and in far Madagascar the strange man called Moyen had given the ultimatum:

"The Western World shall be next!"

CHAPTER I

The Hand of Moyen.

"Who is that man?" asked a young lady passenger of the steward, with the imperious inflection which tells of riches able to force obedience from menials who labor for hire.

She pointed a bejeweled finger at the slender, soldierly figure which stood in the prow of the liner, like a figurehead, peering into the storm under the vessel's forefoot.

"That gentleman, milady?" repeated the steward obsequiously. "That is Prester Kleig, head of the Secret Agents, Master of the Secret Room, just now returning from Madagascar, via Europe, after a visit to the realm of Moyen."

A gasp of terror burst from the lips of the woman. Her cheeks blanched.

"Moyen!" She almost whispered it. "Moyen! The half-god of Asia, whom men call mad!"

"Not mad, milady. No, Moyen is not mad, save with a lust for power. He is the conqueror of the ages, already ruling more of the earth's population than any man has ever done before him—even Alexander!"

But the young lady was not listening to stewards. Wealthy young ladies did not, save when asked questions dealing with personal service to themselves. Her eyes devoured the slender man who stood in the prow of the Stellar, while her lips shaped, over and over again, the dread name which was on the lips of the people of the world:

"Moyen! Moyen!"

Up in the prow, if Prester Kleig, who carried a dread secret in his breast, knew of the young lady's regard, he gave no sign. There were touches of gray at his temples, though he was still under forty. He had seen more of life, knew more of its terrors, than most men twice his age—because he had lived harshly in service to his country.

He was thinking of Moyen, the genius of the misshapen body, the pale eyes which reflected the fires of a Satanic soul, set deeply in the midst of the face of an angel; and wondering if he would be able to arrive in time, sorry that he had not returned home by airplane.

He had taken the Stellar only because the peacefulness of ocean liner travel would aid his thoughts, and he required time to marshal them. Liner travel was now a luxury, as all save the immensely wealthy traveled by plane across the oceans. Now Prester Kleig was sorry, for any moment, he felt, Moyen might strike.

He turned and looked back along the deck of the Stellar. His eyes played over the trimly gowned figure of the woman who questioned the steward, but did not really see her. And then....

"Great God!" The words were a prayer, and they burst from the lips of Prester Kleig like an explosion. Passengers appeared from the lee of lifeboats. Officers on the bridge whirled to look at the man who shouted. Seamen paused in their labors to stare. Aloft in the crow's-nest the lookout lowered his eyes from scouring the horizon to stare at Prester Kleig—who was pointing.

All eyes turned in the direction indicated.

Climbing into the sky, a mile off the starboard beam, was an airplane with a bulbous body and queerly slanted wings. It had neither wheels nor pontoons, and it traveled with unbelievable speed. It came on bullet-fast, headed directly for the side of the Stellar.

"Lower the boats!" yelled Kleig. "Lower the boats! For God's sake lower the boats!"

For Prester Kleig, in that casual turning, had seen what none aboard the Stellar, even the lookout above, had seen. The airplane, which had neither wheels nor pontoons, had risen, as Aphrodite is said to have risen, out of the waves! He had seen the wings come out of the bulbous body, snap backward into place, and the plane was in full flight the instant it appeared.

Prester Kleig had no hope that his warning would be in time, but he would always feel better for having given it. As the captain debated with himself as to whether this lunatic should be confined as dangerous, the strange airplane nosed over and dived down to the sea, a hundred yards from the side of the Stellar. Just before it struck the water, its wings snapped forward and became part of the bulbous body of the thing, the whole of which shot like a bullet into the sea.

Prester Kleig stood at the rail, peering out at the spot where the plane had plunged in with scarcely a splash, and his right hand was raised as though he gave a final, despairing signal.

Of all aboard the Stellar, he only saw that black streak which, ten feet under water, raced like a bolt of lightning from the nose of the submerged but visible plane, straight as a die for the side of the Stellar. Just a black streak, no bigger than a small man's arm, from the nose of the plane to the side of the Stellar.

From the crow's-nest came the startled, terrific voice of the lookout, in the beginning of a cry that must remain forever inarticulate.

The world, in that blinding moment, seemed to rock on its foundations; to shatter itself to bits in a chaotic jumble of sound and of movement, shot through and through with lurid flames. Kleig felt himself hurled upward and outward, turned over and over endlessly....

He felt the storm-tossed waters close over him, and knew he had struck. In the moment he knew—oblivion, deep, ebon and impenetrable, blotted out knowledge.

A roaring, rushing river of chaotic sound, first. Jumbled sound to which Prester Kleig could give no adequate name. But as he tried to analyze its meanings, he was able to differentiate between sounds, and to discover the identity of some.

The river of sound he decided to be the sound of a vibrational explosion of some sort—vibrational because it had that quivery quality which causes a feeling of uneasiness and fret, that feeling which makes one turn and look around to find the eyes boring into one's back—yet multiplied in its intensity an uncounted number of times.

Other sounds which came through the chaotic river of sound were the terrified screaming of the men and women who were doomed. Lifeboats were never lowered, for the reason that with the disintegration of the Stellar, everything inanimate aboard her likewise disintegrated, dropping men and women, crew and passengers, into the freezing waters of the Atlantic.

Prester Kleig dropped with them, only partially unconscious after the first icy plunge. He knew when he floated on the surface, for he felt himself lifted and hurled by the waves. In his half-dream he saw men and women being carried away into wave-shrouded darkness, clawing wildly at nothingness for support, clawing at one another, locking arms, and going down together.

The Stellar, in the merest matter of seconds, had become spoil of the sea, and her crew and passengers had vanished forever from the sight of men. Yet Prester Kleig lived on, knew that he lived on, and that there was an element, too strong to be disbelieved, of reality in his dream.

There was a vibratory sense, too, as of the near activity of a noiseless motor. Noiseless motor! Where had he last thought of those two words? With what recent catastrophe were they associated? No, he could not recall, though he knew he should be able to do so.

Then the sense of motion to the front was apparent—an unnumbered sense, rather than concrete feeling. Motion to front, influenced by the rising and falling motion of mountainous waves.

So suddenly as to be a distinct shock, the wave motion ceased, though the forward motion—and upward!—not only continued but increased.

That airplane of the bulbous body, the queerly slanted wings....

But the glimmering of realization vanished as a sickishly sweet odor assailed his nostrils and sent its swift-moving tentacles upward to wrap themself soothingly about his brain. But the sense of flight, unbelievably swift, was present and recognizable, though all else eluded him. He had the impression, however, that it was intended that all save the most vagrant, most widely differentiated, impressions elude him—that he should acquire only half pictures, which would therefore be all the more terrible in retrospect.

The only impressions which were real were those of motion to the front, and upward, and the sense of noiseless machinery, vibrating the whole, nearby.

Then a distinct realization of the cessation of the sense of flying, and a return, though in lesser degree, of the rising and falling of waves. This latter sensation became less and less, though the feeling of traveling downward continued. Prester Kleig knew that he was going down into the sea again, down into it deeply.... Then that odor once more, and the elusive memory.

Forward motion at last, in the depths, swift, forward motion, though Prester Kleig could not even guess at the direction. Just swift motion, and the mutter of voices, the giving of orders....

Prester Kleig regained consciousness fully on the sands of the shore. He sat up stiffly, staring out to sea. A storm was raging, and the sea was an angry waste. No ship showed on the waters; the mad, tumbled sky above it was either empty of planes or they had climbed to invisibility above the clouds that raced and churned with the storm.

Out of the storm, almost at Prester Kleig's feet, dropped a small airplane. Through the window a familiar face peered at Kleig. A helmeted, begoggled figure opened the door and stepped out.

"Kleig, old man," said the flyer, "you gave me the right dope all right, but I'll swear there isn't a wireless tower within a hundred miles of this place! How did you manage it?"

"Kane, you're crazy, or I am, or...." But Prester Kleig could not go on with the thought which had rushed through his brain with the numbing impact of a blow. He grasped the hand of Carlos Kane, of the Domestic Service, and the yellow flimsy Kane held out to him. It read simply:

"Shipwrecked. Am ashore at—" There followed grid coordinate map readings. "Come at once, prepared to fly me to Washington." It was signed "Kleig."

"Kane," said Kleig, "I did not send this message!"

What more was there to be said? Horror looked out of the eyes of Prester Kleig, and was reflected in those of Carlos Kane. Both men turned, peering out across the tumbled welter of waters.

Somewhere out there, tight-locked in the gloomy archives of the Atlantic, was the secret of the message which had brought Carlos Kane to Prester Kleig—and the agency which had sent it.

CHAPTER III

Wings of To-morrow

As Prester Kleig climbed into the enclosed passenger pit of the monoplane—a Mayther—his ears seemed literally to be ringing with the drumming, mighty voice of Moyen. But now that voice, instead of merely speaking, rang with sardonic laughter. He had never heard the laughter of Moyen, but he could guess how it would sound.

That airplane of the slanted wings, the bulbous, almost bulletlike fuselage, what of it? It was simple, as Kleig looked back at his memoried glimpse of it. The submarine was a metal fish made with human hands; the airplane aped the birds. The strange ship which had caused the destruction of the Stellar, was a combination fish and bird—which merely aped nature a bit further, as anyone who had ever traversed tropical waters would have instantly recognized.

But what did it portend? What ghastly terrors of Moyen roamed the deeps of the Atlantic, of the Pacific, the oceans of the world? How close were some of these to the United States?

The pale eyes of Moyen, he was sure, were already turned toward the West.

Prester Kleig sighed as he seated himself beside Carlos Kane. Then Kane pressed one of the myriad of buttons on the dash, and Kleig lifted his eyes to peer through the skylight, to where that single press of a button had set in motion the intricate machinery of the helicopter.

A four-bladed fan lifted on a slender pedestal, sufficiently high above the surface of the wing for the vanes to be free of the central propeller. Then, automatically, the vanes became invisible, and the Mayther lifted from the sandy beach as lightly, and far more straightly, than any bird.

As the ship climbed away for the skies, and through the transparent floor the beach and the Atlantic fell away below the ship, a sigh of relief escaped Kleig. This was living! Up here one was free, if only for a moment, and the swift wind of flight brushed all cobwebs from the tired human brain. He watched the slender needle of the altimeter, as it moved around the face of the dial as steadily as the hands of a clock, around to thirty thousand, thirty-five, forty.

Then Carlos Kane, every movement as effortless as the flight of the silvery winged Mayther, thrust forth his hand to the dash again, pressed another button. Instantly the propellers vanished into a blur as the vanes of the helicopter dropped down the slender staff and the vanes themselves fitted snugly into their appointed notches atop the wing.

For a second Carlos Kane glanced at the tiny map to the right of the dash, and set his course. It was a matter of moments only, but while Kane worked, Prester Kleig studied the instruments on the dash, for it had been months since he had flown, save for his recent half-dreamlike experience. There was a button which released the mechanism of the deadly guns, fired by compressed air, all operated from the noiseless motor, whose muzzles exactly cleared the tips of Mayther's wings, two guns to each wing, one on the entering edge, one on the trailing edge, fitted snugly into the adamant rigging.

Four guns which could fire to right or left, twin streams of lead, the number of rounds governed only by the carrying power of the Mayther. Prester Kleig knew them all: the guns in the wings, the guns which fired through the three propellers, and the guns set two and two in the fuselage, to right and left of the pits, which could be fixed either up or down—all by the mere pressing of buttons. It was marvelous, miraculous, yet even as Kleig told himself that this was so, he felt, deep in the heart of him, that Moyen knew all about ships like these, and regarded them as the toys of children.

Kane touched Kleig on the shoulder, signaling, indicating that the atmosphere in the pits had been regulated to their new height, and that they could remove their helmets and oxygen tanks without danger.

With a sigh Prester Kleig sat back, and the two friends turned to face each other.

"You certainly look done in, Kleig," said Kane sympathetically. "You must have been through hell, and then some. Tell me about this Moyen; that is, if you think you care to talk about him."

"Talk about him!" repeated Kleig. "Talk about him? It will be a relief! There has been nothing, and nobody, on my mind save Moyen for weary months on end. If I don't talk to someone about him, I'll go mad, if I'm not mad already. Moyen? A monster with the face of an angel! What else can one say about him? A devil and a saint, a brute whose followers would go with him into hell's fire, and sing him hosannas as they were consumed in agony! The greatest mob psychologist the world has ever seen. He's a genius, Kane, and unless something is done, the Western world, all the world, is doomed to sit at the feet, listen to the commands, of Moyen!

"He isn't an Oriental; he isn't a European; he isn't negroid or Indian; but there is something about him that makes one thing of all of these, singly and collectively. His body is twisted and grotesque, and when one looks at his face, one feels a desire to touch him, to swear eternal fealty to him—until one looks into his pale eyes, eyes almost milky in their paleness—and gets the merest hint of the thoughts which actuate him. If he has a failing I did not find it. He does not drink, gamble...."

"And women?" queried Kane, softly.

Kleig was madly in love with the sister of Kane, Charmion, and this thing touched him nearest the heart, because Charmion was one of her country's most famous beauties, about whom Moyen must already have heard.

"Women?" repeated Kleig musingly, his black eyes troubled, haunted. "I scarcely know. He has no love for women, only because he has no capacity for any love save self-love. But when I think of him in this connection I seem to see Moyen, grown to monster proportions, sitting on a mighty throne, with nude women groveling at his feet, bathed in tears, their long hair in mantles of sorrow, hiding their shamed faces! That sounds wild, doesn't it? But it's the picture I get of Moyen when I think of Moyen and of women. Many women will love him, and have, perhaps. But while he has taken many, though I am only guessing here, he has given himself to none. Another thing: His followers—well, he sets no limits to the lusts of his men, requiring only that every soldier be fit for duty, with a body strong for hardship. You understand?"

Kane understood; and his face was very pale.

"Yes," he said, his voice almost a whisper, "I understand, and as you speak of this man I seem to see a city in ruins, and hordes of men marching, bloodstained men entering houses ... from which, immediately afterward, come the screams of women ... terror-stricken women...."

He shuddered and could not go on for the very horror of the vision that had come to him.

But Kleig stared at him as though he saw a ghost.

"Great God, Carl!" he gasped. "The same identical picture has been in my mind, not once but a thousand times! I wonder...."

Was it an omen of the future for the West?

Deep in his soul Prester Kleig fancied he could hear the sardonic laughter of the half-god, Moyen.

A tiny bell rang inside the dash, behind the instruments. Kane had set direction finders, had pressed the button which signaled the Washington-control Station of the National Radio, thus automatically indicating the exact spot above land, by grid-coordinates, where the Mayther should start down for the landing.

An hour later they landed on the flat roof of the new Capitol Building, sinking lightly to rest as a feather, nursed to a gentle landing by the whirring vanes of the helicopter.

Prester Kleig, surrounded by uniformed guards who tried to shield him from the gaze of news-gatherers crowded there on the roof-top, hurried him to the stairway leading into the executive chambers, and through these to the Secret Chamber which only a few men knew, and into which not even Carlos Kane could follow Prester Kleig—yet.

But one man, one news-gatherer, had caught a glimpse of the face of Kleig, and already he raced for the radio tower of his organization, to blazon to the Western world the fact that Kleig had come back.

CHAPTER IV

A Nation Waits in Dread

As Prester Kleig, looking twice his forty years because of fatigue, and almost nameless terrors through which he had passed, went to his rendezvous, the news-gatherer, who shall here remain nameless, raced for the Broadcasting Tower.

As Prester Kleig entered the Secret Room and at a signal all the many doors behind him, along that interminable stairway, swung shut and were tightly locked, the news-gatherer raced for the microphone and gave the "priority" signal to the operator. Millions of people would not only hear the words of the news-gatherer, but would see him, note the expressions which chased one another across his face. For television was long since an accomplished, everyday fact.

"Prester Kleig, of this government's Secret Service, has just returned to the United Americas! Your informer has just seen him step from the monoplane of Carlos Kane, atop the Capitol Building, and repair at once to the Secret Room, closely guarded. But I saw his face, and though he is under forty, he seems twice that. And you know now what this country has only guessed at before—that he has seen Moyen. Moyen the half-man, half-god, the enigma of the ages. What does Prester Kleig think of this man? He doesn't say, for he dares not speak, yet. But your informer saw his face, and it is old and twisted with terror! And—"

That ended the discourse of the news-gatherer, and it was many hours before the public really understood. For, with a new sentence but half completed, the picture of the news-gatherer faded blackly off the screens in a million homes, and his voice was blotted out by a humming that mounted to a terrific appalling shriek! Some terrible agency, about which people who knew their radio could only guess, had drowned out the words of the news-gatherer, leaving the public stunned and bewildered, almost groping before a feeling of terror which was all the more unbearable because none could give it a name.

And the public had heard but a fraction of the truth—merely that Kleig had come back. It had been the intention of the government to deny the public even this knowledge, and it had; but knowledge of the denial itself was public property, which filled the hearts of men and women all through the Western Hemisphere with nameless dread. And over all this abode of countless millions hovered the shadow of Moyen.

The government tried to correct the impression which the news-gatherer had given out.

"Prester Kleig is back," said the radio, while the government speaker tried, for the benefit of those who could see him, to smile reassuringly. "But there is nothing to cause anyone the slightest concern. He has seen Moyen, yes, and has heard him speak, but still there is nothing to distress anyone, and the whole story will be given to you as soon as possible. Kleig has gone into the Secret Room, yes, but every operative of the government, when discussing business connected with diplomatic relations with foreign powers, is received in the Secret Room. No cause for worry!"

It was so easy to say that, and the speaker realized it, which was why he could but with difficulty make his smile seem reassuring.

"Tell us the truth, and tell us quickly," might have been the voiceless cries of those who listened and saw the face and fidgeting form of the speaker. But the words were not spoken, because the people sensed a hovering horror, a dread catastrophe beyond the power of words to express—and so looked at one another in silence, their eyes wide with dread, their hearts throbbing to suffocation with nameless foreboding.

So eyes were horror-haunted, and men walked, flew, and rode in fear and trembling—while, down in the Secret Room, Prester Kleig and a dozen old men, men wise in the ways of science and invention, wise in the ways of men and of beasts, of Nature and the Infinite Outside, decided the fate of the Nation.

That Secret Room was closed to every one. Not even the news-gatherers could reach it; not even the all-seeing eye of the telephotograph emblazoned to the world its secrets.

But was it secret?

Perhaps Moyen, the master mobster, smiled when he heard men say so, men who knew in their hearts that Moyen regarded other earthlings as earthlings regard children and their toys. Did the eyes of Moyen gaze even into the depths of the Secret Room, hundreds of feet below even the documentary-treasure vaults of the Capitol?

No one knew the answer to the question, but the radio, reporting the return of Kleig, had given the public a distorted vision of an embodied fear, and in its heart the public answered "Yes!" And what had drowned out the voice of the radio-reporter?

No wonder that, for many hours, a nation waited in fear and trembling, eyes filled with dread that was nameless and absolute, for word from the Secret Room. Fear mounted and mounted as the hours passed and no word came.

In that room Prester Kleig and the twelve old men, one of whom was the country's President, held counsel with the man who had come back. But before the spoken counsel had been held, awesome and awe-inspiring pictures had flashed across the screen, invented by a third of the old men, from which the world held no secrets, even the secrets of Moyen.

With this mechanism, guarded at forfeit of the lives of a score of men, the men of the Secret Room could peer into even the most secret places of the world. The old men had peered, and had seen things which had blanched their pale cheeks anew. And when they had finished, and the terrible pictures had faded out, a voice had spoken suddenly, like an explosion, in the Secret Room.

"Well, gentlemen, are you satisfied that resistance is futile?"

Just the voice; but to one man in the Secret Room, and to the others when his numbing lips spoke the name, it was far more than enough. For not even the wisest of the great men could explain how, as they knew, having just seen him there, a man could be in Madagascar while his voice spoke aloud in the Secret Room, where even radio was barred!

The name on the lips of Prester Kleig!

"Moyen! Moyen!"

CHAPTER V

Monsters of the Deep

"Gentlemen," said Prester Kleig as he entered the Secret Room, where sat the scientists and inventive geniuses of the Americas, "we haven't much time, and I shall waste but little of it. Moyen is ready to strike, if he hasn't already done so, as I believe. We will see in a matter of seconds. Professor Maniel, we shall need, first of all, your apparatus for returning the vibratory images of events which have transpired within the last thirty-six hours.

"I wish to show those of you who failed to see it the sinking of the Stellar, on which I was a passenger and, I believe, the only survivor."

Professor Maniel strangely mouse-like save for the ponderous dome of his forehead, stepped away from the circular table without a word. He had invented the machine in question, and he was inordinately proud of it. Through its use he could pick up the sounds, and the pictures, of events which had transpired down the past centuries, from the tinkling of the cymbals of Miriam to all the horror of the conflict men had called the Great War, simply by drawing back from the ether, as the sounds fled outward through space, those sounds and vibrations which he needed.

His science was an exact one, more carefully exact even than the measurement of the speed of light, taking into consideration the dispersion of sound and movement, and the element of time.

The interior of the Secret Room became dark as Maniel labored with his minute machinery. Only behind the screen on the wall in rear of the table was there light.

The voice of Maniel began to drone as he thought aloud.

"There is a matter of but a few minutes difference in time between Washington and the last recorded location of the Stellar. The sinking occurred at ten-thirty last evening you say, Kleig? Ah, yes, I have it! Watch carefully, gentlemen!"

So silent were the Secret Agents one could not even have heard the breathing of one of them, for on the screen, misty at first, but becoming moment by moment bolder of outline, was the face of a storm-tossed sea. The liner was slower in forming, and was slightly out of focus for a second or two.

"Ah," said Professor Maniel. "There it is!"

Through the sound apparatus came the roaring and moaning of a storm at sea. On the screen the Stellar rose high on the waves, dropped into the trough, while spumes of black smoke spread rearward on the waters from her spouting funnels. Figures were visible on her decks, figures which seemed carved in bronze.

In the prow, every expression on his face plainly visible, stood Prester Kleig himself, and as his picture appeared he was in the act of turning.

"Now," said Kleig himself, there in the Secret Room, "look off to the left, gentlemen, a mile from the Stellar!"

A rustling sound as the scientists shifted in their places.

They all saw it, and a gasp burst from their lips as though at a signal. For, as the Stellar seemed about to plunge off the shadowed screen into the Secret Room, a flying thing had risen out of the sea—an airplane with a bulbous body and queerly slanting wings.

At the same time, out of the mouth of the pictured figure of Prester Kleig, clear and agonized as the tones of a bell struck in frenzy, the words:

"Great God! Lower the boats! Lower the boats! For God's sake lower the boats!"

In the Secret Room the real Prester Kleig spoke again.

"When the black streak leaves the nose of the plane, after it has submerged, Professor Maniel," said Kleig softly, "slow your mechanism so that we can see the whole thing in detail."

There came a grunted affirmative from Professor Maniel.

The nose of the pictured plane tilted over, diving down for the surface of the sea.

"Now!" snapped Kleig. "Don't wait!"

Instantly the moving pictures on the screen reduced their speed, and the plane appeared to stop its sudden seaward plunge and to drop down as lightly as a feather. The wings of the thing moved forward slowly, folding into the body of the dropping plane.

"They fold forward," said Kleig quietly, "so that the speed of the plane in the take-off will snap them backward into position for flying!"

No one spoke, because the explanation was so obvious.

Slowly the airplane went down to the surface of the sea, with scarcely a plume of spindrift leaping back after she had struck. She dropped to ten feet below the surface of the water, a hundred yards off the starboard beam of the Stellar, her blunt nose pointing squarely at the side of the doomed liner.

"Now," said Kleig hoarsely, "watch closely, for God's sake!"

The liner rose and fell slowly. Out of the nose of the plane, which had now become a tiny submarine, started a narrow tube of black, oddly like the sepia of a giant squid. Straight toward the side of the liner it went. Above the rail the Secret Agents could see the pictured form of Prester Kleig, hand upraised. The black streak reached the side of the Stellar.

It touched the metal plates, spreading upon impact, growing, enlarging, to right and left, upward and downward, and where it touched the Stellar the black of it seemed to erase that portion of the ship. In the slow motion every detail was apparent. At regular speed the blotting out of the Stellar would have been instantaneous.

Kleig saw himself rise slowly from the vanished rail, turning over and over, going down to the sea. He almost closed his eyes, bit his lips to keep back the cries of terror when he saw the others aboard the liner rise, turn over and over, and fly in all directions like jackstraws in a high wind.

The ship was erased from beneath passengers and crew, and passengers and crew fell into the sea. Out of the depths, from all directions, came the starving denizens of the sea—starving because liners now were so few.

"That's enough of that, Professor," snapped Kleig. "Now jump ahead approximately eight hours, and see if you can pick up that aero-sub after it dropped me on the Jersey Coast."

The picture faded out quickly, the screaming of doomed human beings, already hours dead, called back to apparent living by the genius of Maniel died away, and for a space the screen was blank.

Then, the sea again, storm-tossed as before, shifting here and there as Maniel sought in the immensity of sea and sky for the thing he desired.

"Two hundred miles south by east of New York City," he droned. "There it is, gentlemen!"

They all saw it then, in full flight, eight thousand feet above the surface of the Atlantic, traveling south by east at a dizzy rate of speed.

"Note," said Kleig, "that it keeps safely to the low altitudes, in order to escape the notice of regular air traffic."

No one answered.

The eyes of the Secret Agents were on that flashing, bulbous-bodied plane of the strange wings. It appeared to be heading directly for some objective which must be reached at top speed.

For fifteen minutes the flight continued. Then the plane tilted over and dived, and at an altitude still of three thousand feet, the wings slashed forward, clicking into their notches in the sides of the bulbous body, with a sound like the ratchets on subway turnstiles, and, holding their breath, the Secret Agents watched it plummet down to the sea. It was traveling with terrific speed when it struck, yet it entered the water with scarcely a splash.

Then, for the first time, an audible gasp, as that of one person, came from the lips of the Secret Agents. For now they could see the objective of the aero-sub. A monster shadow in the water, at a depth of five hundred feet. A shadow which, as Maniel manipulated his instruments, became a floating underwater fortress, ten times the size of any submarine known to the Americas.

Sporting like porpoises about this held-in-suspension fortress were myriads of other aero-subs, maneuvering by squadrons and flights, weaving in and out like schools of fish. The plane which had bourne Prester Kleig churned in between two of the formations, and vanished into the side of the motionless monster of the deep.

The striking of a deep sea bell, muted by tons and tons of water, sounded in the Secret Room.

"Don't turn it off, Maniel," said Kleig. "There's more yet!"

And there was, for the sound of the bell was a signal. The aero-subs, darting outward from the side of the floating fortress like fish darting out of seaweed, were plunging up toward the surface of the Atlantic. Breathlessly the Secret Agents watched them.

They broke water like flying fish, and their wings shot backward from their notches in the myriad bulbous bodies to click into place in flying position as the scores of aero-subs took the air above the invisible hiding places of the mother submarine.

At eight thousand feet the aero-subs swung into battle formation and, as though controlled by word of command, they maneuvered there like one vast machine of a central control—beautiful as the flight of swallows, deadly as anything that flew.

The Secret Agents swept the cold sweat from their brows, and sighs of terror escaped them all.

At that moment came the voice, loud in the Secret Room, which Kleig at least immediately recognized:

"Well, gentlemen, are you satisfied that resistance is futile?"

And Kleig whispered the name, over and over again.

"Moyen! Moyen!"

It was Prester Kleig, Master of the Secret Room, who was the first to regain control after the nerve-numbing question which, asked in far Madagascar, was heard by the Agents in the Secret Room.

"No!" he shouted. "No! No! Moyen, in the end we will beat you!"

Only silence answered, but deep in the heart of Prester Kleig sounded a burst of sardonic laughter—the laughter of Moyen, half-god of Asia. Then the voice again:

"The attack is beginning, gentlemen! Within an hour you will have further evidence of the might of Moyen!"

CHAPTER VI

Vanishing Ships

Prester Kleig, ordered to Madagascar from the Secret Room, had been merely an operative, honored above others in that he had been one of the few, at that time, ever to visit the Secret Room. Now, however, because he had walked closer to Moyen than anyone else, he assumed leadership almost by natural right, and the men who had once deferred to him took orders from him.

"Gentlemen," he snapped, while the last words of Moyen still hung in the air of the Secret Room, "we must fight Moyen from here. The best brains in the United Americas are gathered here, and if Moyen can be beaten—if he can be beaten—he will be beaten from the Secret Room!"

A sigh from the lips of Professor Maniel. The President of the United Americas nodded his head, as though he too mutely gave authority into the hands of Prester Kleig. The other Secret Agents shifted slightly, but said nothing.

"I have been away a year," said Kleig, "as you know, and many things have come into regular use since I left. Professor Maniel's machine for example, upon which he was working when I departed under orders. There will be further use for it in our struggle with Moyen. Professor, will you kindly range the ocean, beginning at once, and see how many of these monsters of Moyen we have to contend with?"

Professor Maniel turned back to his instruments, which he fondled with gentle, loving hands.

"We have nothing with which to combat the attacking forces of Moyen," went on Kleig, "save antiquated airplanes, and such obsolete warships as are available. These will be mere fodder for the guns, or rays, or whatever it is that Moyen uses in his aero-subs. Thousands, perhaps millions, of human lives will be lost; but better this than that Moyen rule the West! Better this than that our women be given into the hands of this mob as spoils of war!"

From the Secret Agents a murmur of assent.

And then, that voice again, startling, clear, with the slightest suggestion of some Oriental accent, in the Secret Room.

"Do not depend too much, gentlemen," it said, "upon your antiquated warships! See, I am merciful, in that I do not allow you to send them against me loaded with men to be slaughtered or drowned! Professor Maniel, I would ask you to turn that plaything of yours and gaze upon the fleet of obsolete ships anchored in Hampton Roads! In passing, Professor, I venture to guess that the secret of how I am able to talk with you gentlemen, here in your Secret Room, is no secret at all to you. Now look!"

The Secret Agents gasped again, in consternation.

From the white lips of mouselike Maniel came mumbled words, even as his hands worked with lightning speed.

"His machine is simply a variation of my own. And, gentlemen, compatriots, with it he could as easily project himself, bodily, here into the room with us!"

Something like a suppressed scream from one of the men present. A cold hand of ice about the heart of Prester Kleig. But the words of Professor Maniel were limned on the retina of his brain in letters of fire. Suppose Moyen were to project himself into the Secret Room....

But he would not. He was no fool, and even these Secret Agents, most of whom were old and no longer strong, would have torn him limb from limb. But those words of Maniel set whirling once more, and in a new direction, the thoughts of Prester Kleig.

"Mr. President, gentlemen...." It was the voice of Professor Maniel.

All eyes turned again to the screen upon which the professor worked his miracles, which today were commonplaces, which yesterday had been undreamed of. Every Secret Agent recognized the outlines of Hampton Roads, with Norfolk and its towering buildings in the background, and the obsolete warships riding silently at anchor in the roadstead.

For three years they had been there, while a procrastinating Cabinet, Congress and Senate had debated their permanent disposal. They represented millions of dollars in money, and were utterly worthless. Prester Kleig, looking at them now, could see them putting out to sea, loaded with brave-visaged men, volunteering to go to sure destruction to feed the rapacity of Moyen's hordes. Men going out to sea in tubs, singing....

But these ships were silent. No plumes of smoke from their funnels. Like floating mausoleums, filled with dead hopes, shells of past and departed glories.

The beating of waves against their sides could plainly be heard. The anchor chains squeaked rustily in the hawse-holes. Wind sighed through regal, towering superstructures, and no man walked the decks of any one of them.

With bated breath the Secret Agents watched.

Why had Moyen bidden them turn their attention to these shells of erstwhile naval grandeur?

This time no gasps broke from the lips of the Secret Agents. Not even the sound of breathing could be heard. Just the sighing of wind through the superstructures of a hundred ships, the whispering of waves against rusted bulkheads.

Almost imperceptibly at first the towering dreadnought in the foreground began to move! Slowly, the water swirling about her, she backed away from her anchor, tightening the curve of the anchor chain! Water quivered about the point of the chain's contact with the waves!

Quickly the eyes of the Secret Agents swept along the street of ships. The same backward motion, of dragging against their anchor chains, was visible at the bow of each warship!

With not a soul aboard them, the ships were waking into strange and awesome life, dragging at their anchors, like hounds pulling at leashes to be free and away!

"How are they doing it?" It was almost a whisper from the President.

"Some electro-magnetic force, sir!" stated Prester Kleig. "Professor Blaine, that is your province! Please note what is happening, and advise us at once if you see how they are doing it!"

A grunt of affirmation from surly, obese Professor Blaine.

All eyes turned back again to the miracle of the moving ships. One by one, with crashes which echoed and re-echoed through the Secret Room, the anchor chains of the dreadnoughts parted. The ends of them swung from the prows of the warships, while the severed portions splashed into the Roads, and the waters hid them from view.

The great dreadnought in the foreground swung slowly about until her prow was pointed in the direction of the open sea, and though no sea was running, no smoke rose from her funnels, she got slowly, ponderously under way, and started out the Roads. Behind her, in formation, the other ships swung into line.

In a matter of seconds, faster than any of these vessels had ever traveled before, they were racing in column for the open Atlantic. And from the sound apparatus came wails and shrieks of terror, the lamentations of men and women frightened as they had never been frightened before.

The shores behind the moving column of ships was moment by moment growing blacker with people—a black sea of people, whose faces were white as chalk with terror.

But on, out to sea, moved the column of brave ships.

A new note entered into the picture, as from all sides airplanes of many makes swooped in, and swept back and forth over the moving ships, while hooded heads looked out of pits, and faces of pilots were aghast at what they saw.

A ghost column of ships, moving out to sea, speed increasing moment by moment unbelievably. Even now, five minutes after the first dreadnought had started seaward, the wake of each ship spread away on either hand in the two sides of a watery triangle whose walls were a dozen feet high—racing for the shores with all the sullen majesty of tidal waves.

The crowds gave back, and their screams rose into the air in a frightened roar of appalling sound.

Even now, so rapidly did the warships travel, many of the planes could throttle down, so that they flew directly above the heaving decks of the runaway warships.

"Get word to them!" cried Prester Kleig suddenly. "Get word to them that if they follow the ships out to sea not a pilot will escape alive!"

One of the Secret Agents rose and hurried from the Secret Room, traveling at top speed for the first of the many doors enroute to the broadcasting tower from which all the planes could be reached at once. Prester Kleig turned back to the magic screen of Maniel.

The warships, water thrown aside by the lifting thrust of their forefeet in mountains that raced landward with ever-increasing fury, were clearing the Roads and swinging south by east, heading into the wastes of the Atlantic. As they cleared the land, and open water for unnumbered miles lay ahead, the speed of the mighty ships increased to a point where they rode as high on the water as racing launches, and the creaking and groaning of their rusty bolts and spars were a continual paean of protest in the sound apparatus accompanying the showing of the miracle on the screen.

"They're heading straight for the spot where that super-submarine lies!" said the President, and no one answered him.

Prester Kleig, watching, was racing over in his mind what he could recall of his country's armament. Warships were useless, as was being proved here before his eyes. But there still remained airplanes, in countless numbers, which could be diverted from ocean travel and from routine business, to battle this menace of Moyen.

But....

He shuddered as he pictured in his mind's eye the meeting of his country's flower of flying manhood with the monsters of Moyen.

His eyes, as he thought, were watching the racing of those ocean greyhounds, out to sea. They were now out of sight of land, and still some of the planes followed them.

A half hour passed, and then....

The American pilots, in obedience to the radio signals, turning back from this strange phenomenon of the ghost column of capital ships.

Simultaneously, out of the sky dead ahead, dropped the first flight of Moyen's aero-subs.

At the same moment the mysterious power which had dragged the ships to sea was withdrawn, and the warships, with no hands to guide them, swung whither they willed, and floated in as many directions as there were ships, under their forward momentum. There were a score of collisions, and some of the ships were in sinking condition even before the aero-subs began their labors.

The remaining ships floated high out of the water, because they carried no ballast, and from all sides the aero-subs of Moyen settled to the task of destruction—destruction which was simply a warning of what was to come: Moyen's manner of proving to the Americas the fact that he was all-powerful.

"God, what fools!" cried Prester Kleig.

The rearmost of the American aviators had looked back, had seen the first of the aero-subs drop down among the doomed ships. Instantly he turned out to sea again, signalling as he did so to the nearest other planes. And in spite of the radio warning a hundred planes answered that signal and swept back to investigate this new mystery.

"They're going to death!" groaned the President.

"Yes," said Kleig, softly, "but it saves us ordering others to death. Perhaps we may learn something of value as we watch them die!"

"This," said Prester Kleig, as coldly precise as a judge pronouncing sentence of death, "will precipitate the major engagement with Moyen's forces. The fools, to rush in like this, when they have been warned! But even so, they are magnificent!"

The pilots of the aero-subs must instantly have noticed the return of the American pilots, for some of the aero-subs which had dropped to the ocean's surface rose again almost instantly, and swept into battle formation above the drifting hulks of the warships.

The Americans were wary. They drew together like frightened chickens when a hawk hovers above them, and watched the activities of the aero-subs, every move of each one being at the same time visible and audible to the Secret Agents in the Capitol's Secret Room.

The aero-subs which had submerged singled out their particular prey among the floating ships, and the Secret Agents, trying to see how each separate act of destruction was accomplished, watched the aero-sub in the foreground, which happened to be concentrating on the dreadnought which had led the ghost-march of the warships out to sea.

The aero-sub circled the swaying dreadnought as a shark circles a wreck, and through the walls of the aero-sub the watchers in the Secret Room could see the four-man crew of the thing. Grim faced men, men of the Orient they plainly were, coldly concentrating on the work in hand. Their faces were those of men who are merciless, even brutal, with neither heart nor compassion of any kind for weaker ones. One man maneuvered the aero-sub, while the other three concentrated on the apparatus in the nose of the hybrid vessel.

"See," spoke Prester Kleig again, "if you can tell what manner of ray they use, and how it is projected. That's your province, General Munson!"

From the particular Secret Agent named, who was expert for war in the membership of the Secret Room, came a short grunt of affirmation. A few murmured words.

"I'll be able to tell more about it when I see how they operate when they are flying. That black streak under water ... well, I must see it out of the water, and then...."

But here General Munson ended, for the aero-sub which they were especially watching had got into action against the dreadnought.

The aero-sub was motionless and submerged just off the port bow of the dreadnought. The three men inside the aero-sub were working swiftly and efficiently with the complicated but minute machinery in the nose of their transport.

"It can be controlled, then, this ray," said Munson, interrupting himself. "Watch!"

From the nose of the aero-sub leaped, like a streak of black lightning, that ebon agency of death. It struck the prow of the battleship—and the prow, as far aft as the well-deck, simply vanished from sight, disintegrated! It was as though it had never been, and for a second, so swiftly had it happened, the water of the ocean held the impression that portion of the warship had made—as an explosive leaves a crater in the soil of earth!

Then a drumming roar as the sea rushed in to claim its own. The roaring, as of a Niagara, as the waters claimed the ship, rushing down passageways into the hold, possessing the warship with all the invincible, speedy might of the sea.

Mingled with this roaring was the shivering, vibratory sound which Prester Kleig had experienced in his half-dream. The sound was so intense that it fairly rocked the Secret Room to its furthermost cranny.

For a second the dreadnought, wounded to death, seemed to shudder, to hesitate, then to move backward as though wincing from her death blow. It was the pound of the inrushing waters which did it. Then up came the stern of the mighty ship, as she started her last long plunge into the depths.

But attention had swung to another warship, on the starboard beam of which another aero-sub had taken up position. Again the ebon streak of death from her blunt nose, smashing in and through the warship, directly amidships, cutting her in twain as though the black streak had been a pair of shears, the warship a strip of tissue paper.

Up went the prow and the stern of this one, and together, the water separating the two parts as it rushed into the gap, the broken warship went down to its final resting place.

Abruptly Professor Maniel swung back to the American planes which had come back to investigate the activities of the aero-subs, and on the screen, in the midst of the battle formation into which the pilots had swept to hurriedly, the Secret Agents could see the faces of those pilots....

White as chalk with fear, mouths open in gasping unbelief. One man, a pale-faced youth, was the first to recover. He stared around at his compatriots, and plainly through the sound apparatus in the Secret Room came his swift radio signals.

"Attack! Who will follow me against these people?"

His signals were very plain. So, too, were the answers of the other pilots, and the heart of Prester Kleig swelled with pride as he listened to the answering signals—and counted them, discovered that every last pilot there present elected to stay with this youngster, to avenge their country for this contemptuous insult which had been put upon her by the rape of Hampton Roads.

Into swift formation they swept, and with these planes—all planes in use were required by franchise of operating companies to be equipped for the emergencies of war—swung into an echelon formation, the youthful pilot leading by mutual consent.

They swept at full speed toward the warships, four of which had by this time been sent to destruction—one of which had appeared to vanish utterly in the space of a single heartbeat, so quickly that for a second or two the shape of its bilge, the bulge of its keel, was visible in the face of the deep—and openly challenged the aero-subs.

Muzzles of compressed air guns projected from the wing-tips of the planes. Buttons were pressed which elevated the muzzles of guns arranged to fire upward from either side the fighting pits, twin guns that were fired downward from the same central magazine—the only guns in use in the Americas which fired in opposite directions at the same time.

But for a few moments the aero-subs refused combat. Their speed was terrific, dazzling. They eluded the thrusts, the dives and plunges of the American ships as easily as a swallow eludes the dive of a buzzard.

It came to Prester Kleig, however, that the aero-subs were merely playing with the Americans; that when they elected to move, the planes would be blasted from the sky as easily as the warships were being erased from the surface of the Atlantic.

One by one, as methodically as machines, the aero-sub pilots blasted the warships into nothingness. They had their orders, and they went about their performance with a rigidity of discipline which astounded the Secret Agents. They had been ordered to destroy the warships, and they were doing that first—would go on to completion of this task, no matter how many American planes buzzed about their ears.

But one by one as the warships sank, the aero-subs which had either sunk or erased them made the surface and leaped into space with a snapping back of wings that was horribly businesslike as to sound, and climbed up to take part in the fight against the American planes, which must inevitably come.

The last warship, cut squarely in two from stem to stern along her center, as though split thus by a bolt of lightning, fell apart like pieces of cake, and splashed down, sinking away while the spume of her disintegration rolled back from her fallen sides in white-crested waves.

"It exemplifies the policies of Moyen," said Prester Kleig, "for his conquest of the world is a conquest of destruction."

The last aero-sub took to the sky, and the Americans rushed into battle with fine disregard for what they knew must be certain death. They were not fools, exactly, and they had seen, but not understood, the manner in which those gallant old hounds of the sea had been erased from existence.

But in they went, plunging squarely into the heart of the aero-subs' leading formation, which formation consisted of three aero-subs, flying a wing and wing formation.

The young American signaled with upraised hand, and the American pilots made their first move. Every plane started rolling, at dazzling speed, on the axis of its fuselage, while bullets spewed from the guns that fired through the propellers.

Bullets smashed into the leading aero-subs, with no apparent effect, though for a second it seemed that the central aero-sub of the leading formation hesitated for a moment in flight.

Then, swift as had that black streak flashed from the nose of aero-subs submerged, a streak darted from the nose of the central aero-sub, and glistened in the sun like molten gold!

It touched the youngster who had called for volunteers for his attack against this strange enemy. It touched his plane—and the plane vanished instantly, while for a fraction of a second the pilot was visible in his place, in the posture of sitting, hand on a row of buttons which did not exist, head forward slightly as he aimed guns that had vanished.

Then the pilot, still living, apparently unhurt, plunged down eight thousand feet to the sea. The water geysered up as he struck, then closed over the spot, and the gallant American youngster had become the first victim in battle of the monsters of Moyen.

Victim of a slender lancet of what seemed to be golden lightning.

"He could have killed the pilot aloft there," came quietly from Munson, "but he chose to pull his plane away from around him! Their control of the ray is miraculous!"

As though to confirm the statement of Munson, the leading aero-sub struck again, a second plane. The plane vanished, but from the spot where it had flown, not even a bit of metal or of man sufficiently large to be seen by the delicate recording instruments of Maniel dropped out of the sky.

The ray of gold was a ray of oblivion if the minions of Moyen willed.

CHAPTER VIII

Charmion

"Prester Kleig," came suddenly into the Secret Room the voice of far distant Moyen, "you will at once make a change in your rules regarding the admission of other than Secret Agents to the Secret Room. You will at once see that Charmion Kane, sister of your friend, is allowed to enter!"

"God Almighty!" A cry of agony from the lips of Prester Kleig. He had not forgotten Charmion, but simply had had to move so swiftly that he had put her out of his mind. For a year he had not seen her, and an hour or two more could not matter greatly.

"And her brother Carlos," went on the voice, "see that he, too, is admitted. I wish, for certain reasons, that Charmion come unharmed through the direct attack I am about to make against your country. I confess that, save for this ability to speak to you, I am unable to work any damage to the Secret Room, which is therefore the safest place for Charmion Kane! Carlos Kane is being spared because he is her brother!"

There was no mistaking the import of this sinister command from Moyen. He had singled out Charmion, the best beloved of Prester Kleig, for his attentions, and that he was sure of the success of his attack against the United Americas was proved by the calm assurance of his voice, and the fact that, concentrating on the attack as he must be, he still found time for a thought of Charmion Kane.

The hand of ice which had seldom been absent from the heart of Kleig since he had first seen and heard the voice of Moyen gripped him anew. Blood pounded maddeningly in his temples. Cold sweat bathed his body.

But the rest of the Secret Agents, save to freeze into immobility when the hated voice spoke, gave no sign. They had worries of their own, for no instructions had been given that they bring their own loved ones into the sanctuary of the Secret Room.

As though answering the thoughts of the others, the hated voice spoke again.

"I regret that I cannot arrange for sanctuary for the loved ones of all of you, for you are gallant antagonists; why save the few, when the many must perish? For I know you will not surrender, however much I have proved to you that I am invincible. But Charmion Kane must be saved."

"God!" whispered Kleig. "God!"

Then spoke General Munson.

"I think this ray which the Moyenites use is a variation of the principle used in the intricate machinery of Professor Maniel, though how they render it visible I do not know. But it doesn't matter, and may be only a blind! You'll note that when the black streak, or the golden ray, strikes anything that thing instantly disintegrates. A certain pitch of resonance will break a pane of glass. It's a matter of vibration, solely, wherein the molecules composing any object animate or inanimate, are hurled in all directions instantaneously.

"Professor Maniel's apparatus, the Vibration-Retarder, is able to recapture the vibrations, speeding outward endlessly through space, and to reconstruct, and draw back to visibility the objects destroyed by this visible vibratory ray, whatever it is. This problem, then, falls into the province of Professor Maniel!"

Through the heart and soul of Prester Kleig there suddenly flowed a great surge of hope.

"General Munson, if you will operate the machinery of the Vibration-Retarder, I wish to talk with Professor Maniel!"

Instantly, efficiently, without a word in reply to the eager command of Prester Kleig, General Munson relieved Professor Maniel at the apparatus which Maniel called the Vibration-Retarder, his invention which he had combined with audible teleview to complete this visual miracle of the Secret Room. Professor Maniel stepped to where Prester Kleig was sitting.

Prester Kleig put fingers to his lips for silence, and an expression of surprise crossed the wrinkled dead-white face of the Professor.

Before Kleig could speak, however, there came a signal from somewhere outside the Secret Room, a signal which said that the doors were being opened and that a personage was coming. The Secret Agents looked at one another in surprise, for every man who had a right to be inside the Secret Room was already present.

"I know," said Kleig, his face a mask of terror. "It is Charmion and Carlos Kane! Moyen, the devil, has managed to make sure of obedience to his orders!"

The Secret Agents turned back to the screen, upon which the view of the first aerial brush of the American flyers with the minions of Moyen, in their aero-subs, was drawing to a terrible close.

For, as the aero-sub commanders had played with the warships, which had no human beings aboard them, so now did they play with the planes of the Americas.

One American flyer, startled into a frenzy by the fate of his fellows, put his helicopter into action, and leaped madly out of the midst of the battle. Instantly an aero-sub zoomed, skyward after him. Again that golden streak of light from the nose of an aero-sub, and the helicopter vanes and the slender staff upon whose tip they whirled vanished, shorn short off above the vane-grooves in the top of the wing!

The plane dropped away, fluttering like a falling leaf for a moment, before the aviator started his three propellers again.

A cheer broke from the lips of Prester Kleig as he watched. The commander of that particular aero-sub, apparently contemptuous of this flyer who had tried to cut out of the fight, allowed him to fall away unmolested—and the American, driven berserk by the casual, contemptuous treatment accorded him by this strange enemy, zoomed the second his propellers whirred into top-speed action, and raced up the sky toward the belly of the aero-sub.

"If only the aero-sub has a blind spot!" cried Prester Kleig.

In that instant a roaring crash sounded in the Secret Room as the American plane, going full speed, crashed, propellers foremost, into the belly of the aero-sub.

And the aero-sub, whose brothers had seemed until this moment invincible, did not escape the wrath of the American—though the American went into oblivion with it!

For, welded together, American plane and aero-sub started the eight thousand feet plunge downward to the sea!

"Watch!" shrieked Munson. "Watch!"

As the aero-sub and the plane plunged down through the formation of fighters, the aero-sub pilots saw it, and they fled in wild dismay and at top speed from their falling compatriot. Why? For a moment it was not apparent. And then it was.

For out of the body of the doomed aero-subs came sheets of golden flame! Not the flames of fire, but the golden sheen of that streak which the aero-subs had used against the American planes already out of the fight! The American flyer had crashed into the container, whatever it was, that harnessed the agency through which the minions of Moyen had destroyed the Stellar, and the battleships raped from Hampton Roads!

"It is liquid, then!" shrieked Munson.

And it seemed to be. For a second the golden mantle, strange, awe-inspiring, bathed and rendered invisible the aero-sub and the plane which had slain her. Then the golden flame vanished utterly, instantly—and in the air where it had been there was nothing! The aero-sub was gone, and the plane whose mad charge had erased her.

"Her own death dealing agency destroyed her!" shrieked Munson. "And the other aero-subs cut away from the fight to save themselves, because they too carry death and destruction within them!"

Then the inner door of the Secret Room opened and two people entered. One of them, a dazzling beauty with glorious black hair and the tread of a princess, a picture of perfection from jeweled sandals to coiffured hair, was Charmion Kane. Behind her came her brother, whose face was chalky white. But Charmion, as she crossed to Kleig and kissed him, while her eyes were luminous with love, held her head proudly high, imperious.

"I know," she said softly to Kleig, "and I am not afraid! I know you will prevent it!"

Kleig waved the two to chairs and turned again to Professor Maniel.

On a piece of paper he wrote swiftly, using a mode of shorthand known only to the Secret Agents.

"Professor," he wrote feverishly, "can you reverse the process used in your Vibration-Retarder? Tell me with your eyes, for Moyen may even know this writing, and I am sure he hears what we say here, may even be able to see us?"

Professor Maniel started and stared deeply into the eyes of Prester Kleig. His face grew thoughtful. He brushed his slender hand over the massive dome of his brow. Hope burned high in the heart of Prester Kleig.

Then, despite Kleig's instructions to answer merely by the expression in his eyes, Professor Maniel leaned forward and wrote quickly on the piece of paper Kleig had used.

"Two hours!"

Nothing else, no explanations; but Prester Kleig knew. Maniel believed he could do it, but he needed two hours in which to perfect his theory and make it workable. Kleig knew that had he been able to do it in two years, or two decades, it still would have been in the nature of a miracle.

But two hours....

And Moyen had said that he was preparing to attack at once.

In two hours Moyen, unless the Americas fought against him with every resource at their command, could depopulate half the Western World. Kleig looked back to the screen.

There was not a single American plane in the sky above the graveyard of those vanished warships. And the aero-subs, swift flying as the wind, were racing back to the mother ship, scores of miles away.

Munson worked with the Vibration-Retarder, the Sound-and-Vision devices, ranging the sea off the coast to either side of that huge, suspended fortress which was the mother submarine of the aero-subs.

Gasps of terror, though the sight was not unexpected, broke from the lips of every person in the Secret Room.

For super-monsters of Moyen were moving to the attack.

CHAPTER IX

Flowers of Martyrdom

For a minute the Secret Agents were appalled by the air of might of the deep-sea monsters of Moyen, brought bodily, almost into the Secret Room by the activities of General Munson at the Sound-and-Vision apparatus.

Off the coast, miles away, yet looming moment by moment larger, indicating the deceptively swift speed of the monsters, were scores of the great under-water fortresses, traveling toward the coast of the United Americas in a far-flung formation, each submarine separated from its neighbor to right and left by something like a hundred miles, easy cruising radius for the little aero-subs carried inside the monsters.

That each submarine did carry such spawn of Satan was plainly seen, for as the great submarines moved landward, scores of aero-subs sported gleefully about the mother ships. There was no counting the number of them.

Two hours Maniel needed for his labors, which meant that for two hours the flower of the country's manhood must try to hold in check the mighty hordes of Moyen.

"Somewhere there," stated Prester Kleig, "in one or the other of those monsters, is Moyen himself. I know that since he wished Charmion saved for his attentions! Do your work with your apparatus, Munson, while I go out to the radio tower to broadcast an appeal for volunteers. Charmion—Carlos...."

But Prester Kleig found that he could not continue. Not that it was necessary, for Charmion and Carlos knew what was in his mind. Charmion was a lady of vast intelligence, from whom life's little ironies had not been hidden—and Kane and Kleig had already discussed the activities of Moyen where women were concerned.

Prester Kleig hurried to the Central Radio Tower, and as he passed through each of the many doors leading out to the roof of the new Capitol Building the guards at the doors left to form a guard for him, at this moment the most precious man in the country, because he knew best the terrible trials which faced her.

The country was in turmoil. It seemed almost impossible that a whole day had passed since Prester Kleig had returned and entered the Secret Room. In the meantime a fleet of battleships had been drawn by some mysterious agency out to sea from Hampton Roads, and a fleet of fighting planes which had followed the ghost column outward had not returned.

News-gatherers had spread the stories, distorted and garbled, across the western continents, and throughout the western confederacy men, women and children lived in the throes of the greatest fear that had ever gripped them. Fear held them most because they could not give the cause of their fear a name—save one....

Moyen.... And the name was on the lips of everyone, and frenzied woman stilled their squalling babes with its mention.

No word yet from the Secret Room, but Prester Kleig had scarcely appeared from it than someone started the radio signal which informed the frenzied, waiting world of the west that information, exact if startling, would now be forthcoming.

In millions of homes, in thousands of high-flying planes, listeners tuned in at the clear-all hum.

Prester Kleig wasted no time in preliminaries.

"Prester Kleig speaking. We are threatened by Moyen, with scores of monster submarines, each a mother ship for scores of aero-subs, combinations of airplanes and miniature submarines. They are moving up on our eastern coast, from some secret base which we have not yet located. They are equipped with death dealing instruments of which we have but the most fragmentary knowledge, and for two hours I must call upon all flyers to combat the menace; until the Secret Agents, especially Professor Maniel, have had opportunity to counteract the minions of Moyen.

"Flyers of the United Americas! In the name of our country I ask that volunteers gather on the eastern coast, each flyer proceeding at once to the nearest coast-landing, after dropping all passengers. Your commanders have already been named by your various organizations, as required by franchise, and orders for the movement of the entire winged armada will come from this station. However, the orders will simply be this: Hold Moyen's forces at bay for a period of two hours! And know that many of you go to certain death, and make your own decisions as to whether you shall volunteer!"

This ended, Prester Kleig, excitement mounting high, hurried back to the Secret Room.

Now the public knew, and as the American public is given to doing, it steadied down when it knew the worst. Fear of the unknown had changed the public into a myriad-souled beast gone berserk. Now that knowledge was exact men grew calm of face, determined, and women assumed the supporting role which down the ages has been that of brave women, mothers of men.

A period of silence for a time after Prester Kleig's pronouncement.

As he entered the first door leading into the Secret Room, Carlos Kane met and passed him with a smile.

"You called for winged volunteers, did you not, Kleig?" he asked quietly.

Kleig nodded. "You are going?" he said.

"Yes. It is my duty."

No other words were necessary, as the men shook hands. Prester Kleig going on to the Secret Room, Carlos Kane going out to join the mighty armada which must fight against the minions of Moyen.

The words of Prester Kleig were heard by the pilots of the sky-lanes. The passenger pits, equipped with self-opening parachutes which dropped jumpers in series of long falls in order to acquire swift but accurate and safe landing—they opened at intervals in long falls of two thousand feet, stayed the fall, then closed again, so that drops were almost continuous until the last four hundred feet—and pilots, swiftly making up their minds, dropped their passengers, banked their planes, and raced into the east.

All over the Americas pilots dropped their passengers and their loads if their franchises called for the carrying of freight, and banked about to take part in the first skirmish with the Moyenites.

Dropping figures almost darkened the sky as passengers plunged downward after the startling signal from Washington. Flowers, which were the umbrellas of chutes, opened and closed like breathing winged orchids, letting their burdens safely to earth.

And clouds and fleets of airplanes came in from all directions to land, in rows and rows which were endless, wing and wing, along the eastern coast.

Prester Kleig had scarcely entered the Secret Room than the hated voice of Moyen again broke upon the ears of the machinelike Secret Agents.

"This is madness, gentlemen! My people will annihilate yours!"

But, since time for speech had passed, not one of the Secret Agents made answer or paid the slightest heed to the warning, though deep in the heart of each and every one was the belief that Moyen spoke no more than the truth.

Too, there was a growing respect for the half-god of Asia, in that he was good enough to warn them of the holocaust which faced their country.

By hundreds and thousands, wing and wing, airplanes dropped to the Atlantic coast at the closest point of contact, when the signal reached them. At high altitudes, planes crossing the Atlantic turned back and returned at top speed, dropping their passengers as soon as over land. That Moyen made no move to prevent the return of flyers out over the ocean, and now coming back, was an ominous circumstance.

It seemed to show that he held the American flyers, all of them, in utter contempt.

Prester Kleig regarded the time. It had been half an hour since Moyen had spoken of attack, half an hour since the monsters of the deep had started the inexorable move toward land. On the screen the submarines were bulking larger and larger as the moments fled, until it seemed to the Secret Agents that the great composite shadow of them already was sweeping inland from the coast.

As the coast came close ahead of the monster subs the little aero-subs, to the surprise of the Secret Agents, all vanished into their respective mother ships.

"But they have to use them," groaned Munson. "For their submarines are useless in frontal attack against our shores!"

"I am not so sure of that," said Prester Kleig. "For I have a suspicion that those submarines have tractors under their keels, and that they can come out on land! If this is so the monsters can, guarded by armour-plate, penetrate to the very heart of our most populated areas before their aero-subs are released."

None of the Secret Agents as yet had stopped to ponder how the monsters had reached their positions, and why Moyen was attacking from the east, when the Pacific side of the continents would have appeared to be the obvious point of attack, and would have obviated the necessity of long, secret under-sea journeys wherein discovery prematurely must have been one of the many worries of the submarine commanders.

The mere fact of the presence of the monsters was enough. What had preceded their presence was unimportant, save that their presence, and their near approach to the shore undetected, further proved the executive and planning genius of Moyen.

Two miles, on an average, off the eastern coast the submarines laid their eggs—the aero-subs, which darted from the sides of the mother ships in flights and squadrons, made the surface, and leaped into the sky.

Five minutes later and the signal went forth to the phalanx of the volunteers.

"Take off! Fly east and engage the enemy, and hold him in check, and the God of our fathers go with you!"

One hour had passed since Moyen's ultimatum when the first vanguard of the American flyers, obeying the peremptory signal, took the air and darted eastward to meet the winged death-harbingers of Moyen.

CHAPTER X

"They Shall Not Pass!"

Prester Kleig's heartfelt desire, as the American flyers closed with the first of the aero-subs, was to go out with them and aid them in the attack against the Moyenites. But he knew, and it was a tacit thing, that he best served his country from the safe haven of the Secret Room.

As he watched the scenes unfold on the screen of Maniel's genius, with occasional glances at the somewhat mysterious but profound and concentrated labors of Maniel, Charmion Kane rose from her place and came to his side.

Wide-eyed as she watched the joining of battle, she stood there, her tiny hand encased in the tense one of Prester Kleig.

"You would like to be out there," she murmured. "I know it! But your country needs you here—and I have already given Carlos!"

Prester Kleig tightened his grip on her hand.

There was deep, silent understanding between these two, and Prester Kleig, in fighting against the Moyenites, realized, even above his realization that his labors were primarily for the benefit of his country, that he really matched wits with Moyen for the sake of Charmion. Had anyone asked him whether he would have sacrificed her for the benefit of his country, it would have been a difficult question to answer.

He was glad that the question was never asked.

"Yes, beloved," he whispered, "I would like to be out there, but the greatest need for me is here."

But even so he felt as though he was betraying those intrepid flyers he was sending to sure death. Yet they had volunteered, and it was the only way.

Maniel, a gnomelike little man with a Titan's brain, labored with his calculations, made swiftly concrete his theories, while at the Sound-and-Vision apparatus excitable General Munson ranged the aerial battlefield to see how the tide of battle ebbed and flowed.

That neither side would either ask or give quarter was instantly apparent, for they rushed head-on to meet each other, those vast opposing winged armadas, at top speed, and not a single individual swerved from his course, though at least the Americans knew that death rode the skyways ahead.

Then....

The battle was joined. Moyen's forces were superior in armament. Their sky-steeds were faster, more readily maneuverable, though the flying forces of the Americas in the last five years had made vast strides in aviation. But what the Americans lacked in power they made up for in fearless courage.

The plan of battle seemed automatically to work itself out.

The first vanguard of American planes came into contact with the forces of Moyen, and from the noses of countless aero-subs spurted that golden streak which the Secret Agents knew and dreaded.

The first flight of planes, stretching from horizon to horizon, vanished from the sky with that dreadful surety which had marked the passing of the Stellar, and such of those warships as had felt the full force of the visible ray.

From General Munson rose a groan of anguish. These convertible fighting planes had been the pride of the heart of the old warrior. To do him credit, however, it was the wanton, so terribly inevitable destruction of the flyers themselves which affected him. It was so final, so absolute—and so utterly impossible to combat.

"Wait!" snapped Prester Kleig.

For the intrepid flyers behind that vanguard which had vanished had witnessed the wholesale disintegration of the leading element of the vast armada, and the pilots realized on the instant that no headlong rush into the very noses of the aero-subs would avail anything.

The vast American formation broke into a mad maelstrom of whirling, darting, diving planes. Every third plane plummeted downward, every second one climbed, and the remaining ships, even in the face of what had happened to the vanished first flight, held steadily to the front.

In this mad, seemingly meaningless formation, they closed on the aero-subs. Without having seen the fight, the Americans were aping the action of that one nameless flyer who had charged the aero-sub that had been destroyed.

Kleig remembered. A score of ships had been destroyed utterly above the graveyard of dreadnoughts, yet only one aero-sub, and that quite by chance, had been marked off in the casualty column.

Death rode the heavens as the American flyers went into action. For head-on fights, flyers went in at top speed, their planes whirling on the axes of fuselages, all guns going. Planes were armored against their own bullets, and they were not under the necessity of watching to see that they did not slay their own friends.

Even so, bullets were rather ineffective against the aero-subs, whose apparently flimsy, almost transparent outer covering diverted the bullets with amazing ease.

A whirling maelstrom of ships. The monsters of Moyen had drawn first blood, if the expression may be used in an action where no blood at all was drawn, but machines and men simply erased from existence.

Hundreds of planes already gone when the second flight of ships closed with the aero-subs. Yellow streaks of death flashed from aero-sub nostrils, but even as aero-sub operators set their rays into motion the American flyers in head-on charge rolled, dived or zoomed, and kept their guns going.

High above the first flight of aero-subs, behind which another flight was winging swiftly into action, American flyers tilted the noses of their planes over and dived under full power—to sure death by suicide, though none knew it there at the moment.

These aero-subs could not be driven from the sky by usual means, and could destroy American ships even before those planes could come to handgrips; but they, the flyers plainly believed, could be crashed out of the sky and so, never guessing what besides death in resulting crashes they faced, the flyers above the aero-subs, even as aero-subs in rear flashed in to prevent, dived down straight at the backs of the aero-subs.

In a hundred places the dives of the Americans worked successfully, and American planes crashed full and true, full power on, into the backs of the "flying fish." In some aero-subs the container of the Moyen-dealing agency apparently remained untouched, and airplanes and aero-subs, welded together, plunged down the invisible skylanes into the sea.

Under water, some of the aero-subs were seen to keep in motion, limping toward the nearest mother submarines.

"I hope," said Prester Kleig, "the American flyers in such cases are already dead, for Moyen will be a maniac in his tortures. Munson, do you hurriedly examine the mother-subs and see if you can locate Moyen."

However, only a scattered aero-sub here and there went down without the strange substance of the yellow ray being released. In most cases, upon the contact of plane with aero-sub, the aero-subs and planes were instantly blotted from view by the yellow, golden flames from the heart of the winged harbingers of Moyen.

Golden flames, blinding in their brightness, dropping down, mere shapeless blotches, then fading out to nothingness in a matter of seconds—with aero-sub and airplane totally erased from action and from existence.

The American flyers saw and knew now the manner of death they faced. Yet all along the battle front not an American tried to evade the issue and draw out of the fight. A sublime, inspiring exhibition of mass courage which had not been witnessed down the years since that general engagement which men of the time had called the Great War.

Prester Kleig turned to look at Maniel. Drops of perspiration bathed the cheeks of the master scientist, but his eyes were glowing like coals of fire. His face was set in a white mask of concentration, and Prester Kleig knew that Maniel would find the answer to the thing he sought if such answer could be found.

Would the American flyers be able to hold off the minions of Moyen until Maniel was ready? The fight out there above the waters was a terrible thing, and the Americans fought and died like men inspired, yet inexorably the winged armada of Moyen, preceded by those licking golden tongues, was moving landward.

"Great God!" cried Munson. "Look!"

There was really no need for the order, for every Secret Agent saw as soon as did Munson. Under the sea, just off the coast, the mother-subs had touched their blunt nose against the upward shelving of the sea bottom—had touched bottom, and were slowly but surely following the underwater curve of the land, up toward the surface, like unbelievable antediluvian monsters out of some nightmare.

"Yes," said Kleig quietly, "those monsters of Moyen can move on land, and the aero-subs can operate from them as easily on land as under water."

Kleig regarded the time, whirled to look at Professor Maniel.

One hour and forty minutes had passed since Maniel had begged for two hours in which to prepare some mode of effectively combatting the might of Moyen. Twenty minutes to go; yet the mother-subs would be ashore, dragging their sweating, monstrous sides out of the deep, within ten minutes!

Ten minutes ashore and there was no guessing the havoc they could cause to the United Americas!

"Hurry, Maniel! Hurry! Hurry!" said Prester Kleig.

But he spoke the words to himself, though even had he spoken them aloud Maniel would not have heard. For Maniel, for two hours, had closed his mind to everything that transpired outside his own thoughts, devoted to foiling the power of Moyen.

"I've found him!" snapped Munson.

He pointed with a shaking forefinger to one of the mother-subs crawling up the slant of the ocean bed, twisted one of the little nubs of the Sound-and-Vision apparatus, and the angelic face and Satanic eyes, the twisted body, of Moyen came into view.

The face was calm with dreadful purpose, and Moyen stood in the heart of one of his monsters, his eyes turned toward the land. With a gasp of terror, dreadfully afraid for the first time, Prester Kleig turned and looked into the eyes of Charmion....

"No," she said. "It will never happen. I have faith in you!"

There were still ten minutes of the two hours left when the mother-subs broke water and started crawling inland, swiftly, surely, without faltering in the slightest as they changed their element from water to land.

As though their appearance had been the signal, the aero-subs in action against the first line of American planes broke out of the one-sided fight and dived for their mother ships, while a mere handful of the American planes started back for home to prepare anew to continue the struggle.

Prester Kleig gave the signal to the second monster armada which had remained in reserve.

"Do everything in your power to halt the march of Moyen's amphibians!"

Ten minutes to go, and Professor Maniel still labored like a Titan.

As the scores of amphibian monsters came lumbering forth upon dry land it became instantly apparent why the aero-subs had returned to the mother ships. For a few moments, out of the water, the amphibians were almost helpless, with practically no way of attack or defense—as helpless as huge turtles turned legs up.

But as each aero-sub entered its proper slot in the side of the mother amphibian, it was turned about and the nose thrust back into the opening, which closed down to fit tightly about the nose of the aero-sub, so that those flame-breathing monsters protruded from the sides of the amphibians in many places—transforming the amphibians into monsters with hundreds of golden, licking tongues!

As, with each and every aero-sub in place, the amphibians started moving inland, Professor Maniel made his first move. With the tiny apparatus upon which he had been working, he stepped to the table before the Sound-and-Vision apparatus and spoke softly to his compatriots.

"Gentlemen," he said, "I have finished, and it will work effectively!"

Though Maniel spoke softly, it was plain to be seen that he was proud of his accomplishment, which remained only to be attached to start performance.

A matter of seconds....

Yet during those seconds was the real might, the real power for utter devastation, of Moyen fully exposed!

The amphibians got under way as the airplanes of the Americas swept into the fight.

From the sides of the monsters licked out those golden tongues of flame—and from the front.

Half a dozen amphibians slipped into New York from the harbor side and started into the heart of the city. And between the time when Maniel had said he was ready and the moment when he made his first active move against Moyen, a half-dozen skyscrapers vanished into nothingness, the spots where they had stood swept as clear of debris as though the land had never been reclaimed from Nature!

None was ever destined to know how many lives were lost in that first attack of the monsters of the golden, myriad tongues; but the monsters struck in the midst of a working day when the skyscrapers were filled with office workers.

And resolve struck deep into the hearts of the Secret Agents: if Moyen were turned back, he must be made to pay for the slaughter.

A matter of seconds....

Then a moment of deathly silence as Munson gave way at the screen for the gnomelike little Professor Maniel.

"Now, gentlemen!" snapped Maniel. "If my theory is correct," manipulating instruments with lightning speed as he talked, "the reversion of the principle of my Vibration-Retarder—which captures vibrations speeding outward from the earth and transforms them once again into sound and pictures audible and visible to the human ear—this apparatus will disintegrate the monsters as our boats and planes were disintegrated!

"In this I have even been compelled to manipulate in the matter of time! I must not only defeat and annihilate the minions of Moyen, but must work from a mathematical absurdity, so that at the moment of impact that moment itself must become part of the past, sufficiently remote to remove the monsters at such distance from the earth that not even the mighty genius of Moyen can return them!"

The whirring, gentle as the whirring of doves' wings. In the center of the picture on the screen were those half-dozen amphibians laying waste Manhattan. Maniel set his intricate, delicate machinery into motion.

Instantly the amphibians there seemed to become misty, shadowy, and to lift out of Manhattan up above the roof-tops of skyscrapers still remaining, nebulous and wraithlike as ghost-shrouds—yet swinging outward from the earth with speed almost too swift for the eye to detect.

But where the amphibians had rested there stood, reclined—in all sorts of postures, surprising and even a bit ridiculous—the men of Moyen who had operated the monsters of Moyen!

From the Central Radio tower went forth a mighty voice of command to the planes which had been engaging the aero-subs off the coast.

"Slay! Slay!"

Down flashed the planes of the Americas, and their guns were blazing, inaudibly, but none the less deadly of aim and of purpose, straight into the midst of the men of Moyen who had thus been left marooned and almost helpless with the vanishing of their amphibians.

And, noting how they fell in strangled, huddled heaps before the vengeful fire of the American planes, the Secret Agents sighed, and Maniel, his face alight with the pride of accomplishment, switched to another point along the coast.

And as a new group of the monsters of Moyen came into view, and Maniel bent to his labors afresh, the hated voice of the master mobster broke once more in the Secret Room.

"Enough, Kleig! Enough! We will surrender to save lives! I stipulate only that my own life be spared!"

To which Prester Kleig made instant reply.

"Did you offer us choice of surrender? Did you spare the lives of our people which, with your control of your golden rays, you could easily have done? No! Nor will we spare lives, least of all the life of Moyen!"

The whirring again, as of the whirring of doves' wings. More metal monsters, even as golden tongues spewed forth from their many sides, vanished from view, leaping skyward, while the operators of them were left to the mercies of the remaining airmen of the Americans.

Voicelessly the word went forth:

"Slay! Slay!"

It was Charmion who begged for mercy for the vanquished as, one by one, as surely as fate, the monsters with their contained aero-subs were blotted out, leaving pilots and operators behind them. Down upon these dropped the airmen of the West, slaying without mercy....

"Please, lover!" Charmion whispered. "Spare them!"

"Even...?" he began, thinking of Moyen, who would have taken Charmion. He felt her shudder as she read his mind, understood what he would have asked.

"There he is!" came softly from Munson.

An amphibian had just been disintegrated, had just climbed mistily, swiftly, into invisibility in the skies. And there in the midst of the conquerors left behind, his angel's face set in a moody mask, his pale eyes awful with fear, his misshapen body sagging, terrible in its realization of failure, was Moyen!

Even as Kleig prepared to give the mercy signal, a plane dived down on the group about Moyen, and the Secret Agents could see the hand of the pilot, lifted high, as though he signaled.

The plane was a Mayther! The pilot was Carlos Kane!

Just as Kane went into action, and the noiseless bullets from his ship crashed into that twisted body, causing it to jump and twitch with the might of them, Prester Kleig gave the signal.

Even as the figure of Moyen crashed to the soil and the man's soul quitted its mortal casement, Kleig commanded:

"Spare all who surrender! Make them prisoners, to be used to repair the damage they have done to our country! Guards will be instantly placed over the amphibians and the aero-subs—for the day may come when we shall need to know their secrets!"

And, as men, hands lifted high in token of surrender, quitted the now motionless amphibians, and flyers dropped down to make them prisoners, Maniel sighed, pressed various buttons on his apparatus, and the mad scene of carnage they had witnessed for hours faded slowly out, and darkness and silence filled the Secret Room.

But darkness is the joy of lovers, and in the midst of silence that was almost appalling by contrast, Kleig and Charmion were received into each other's arms.