THE minutes went by, ten, fifteen, twenty of them—a half hour—and then, from far down the track, hoarse through the night, came the scream of a whistle. From his pocket the Hawk took out his diminutive flashlight, thin as a pencil. It might have been the winking of a firefly, as he played it on the dial of his watch.

“On the dot!” murmured the Hawk. “Some train—the Fast Mail! I guess, though, she'll be a little late, at that, to-night—when she pulls into Selkirk!” A roar and rumble was in the night again, increasing steadily in volume. Down the right of way, in the distance, a flash of light stabbed through the black. It grew brighter and brighter. The Hawk, wary of the spread of the powerful electric headlight, edged further away from the trackside. And now the rails gleamed like polished silver—and the water-tank stood up out of the darkness, a thing of monstrous size. There was the hiss of steam, the rasp and grind of the setting brakes, the glinting rays from the windows of a long string of coaches that trailed back to the station platform, and a big ten-wheeler, like some human thirsty thing, was panting beside the water-tank.

The engineer, with his torch, swung from the gangway for an oil around. There was the creak of the descending spout, the rush of water, and, silhouetted against the water-tank, the Hawk could make out the fireman standing on the back of the tender. And now, poking with his long-spouted oil can, weirdly swallowed up in the darkness at intervals as he thrust the torch far in under the big machine, the engineer moved slowly along the side of the engine, and finally disappeared around the end of the pilot.

The Hawk stole forward closer to the track again, his eyes on the fireman, who, now that the engineers torch was on the other side, was more sharply outlined than before. Came then the swish and gush of water as it overflowed, the spout banged back against the water-tank, and the fireman scrambled back over the tender into the cab. It was the moment the Hawk had been waiting for. Swiftly, but still crawling as a safeguard against being seen by any of the train crew in the rear, he moved up the embankment, and in an instant had swung himself up between the tender and the forward door of the express car. There was no platform here, of course, but the end beam of the car, making a sort of wide threshold, gave him ample room on which to stand.

The roar of escaping steam drowned out all other sounds; the back of the tender hid him from any chance of observation from the cab. He tried the door cautiously. It was locked, of course—there were twenty thousand dollars' worth of stones in the safe inside! The Hawk felt carefully over the lock with his fingers, classifying it in the darkness, as it were, by the sense of touch, and produced from his packet his bunch of skeleton keys. He inserted one of the keys, worked with it for a moment, then shook his head, and selected another. This time he felt the lock-bolt slide back. The train was jerking into motion now. He exchanged his keys for his automatic, turned the knob softly, opened the door an inch, and listened. Even the Wire Devils were not infallible, and if by any chance the messenger—

The Hawk whistled low and contentedly under his breath. He had caught a glimpse of the interior of the car—and now he slipped quickly through the door, closing the door behind him.

A quarter length down the car, in the aisle made by the express packages which were piled high on either side, the messenger, a young man of perhaps twenty-two, was huddled, apparently unconscious, in his chair. In a flash the Hawk was down the car, and bending sharply over the other. The man sat in a helpless, sagging attitude; he was breathing heavily, and his head, hanging forward and a little to one side, swayed limply with the motion of the car. There was no question as to the messenger's condition—he was drugged, and well drugged. From the man, the Hawk's eyes travelled to a sort of desk, or ledge, built out from the side of the car, and topped by a pigeonholed rack stuffed with express forms and official-looking manila envelopes. On the desk was a small leather satchel containing some lunch, and a bottle of what was evidently cold tea, now but barely a quarter full; and, as though to supply further evidence that the man had succumbed in the midst of his meal, a little to one side lay a meat sandwich, half eaten.

The Hawk nodded quietly to himself, as again his eyes shifted—this time to a small safe, about three feet square, that stood beneath the desk. It was quite easy to understand now. The Wire Devils had only to ascertain the fact that it was the messenger's habit to eat his lunch at a certain time, choose the point of attack on the line to correspond therewith, and see that a sufficient quantity of knockout drops was introduced into the cold tea—not a very weighty undertaking for the Wire Devils!

Well, it was a bit rough on the boy—the Hawk was kneeling now in front of the safe—but he, the Hawk, was greatly indebted to the Wire Devils! Twenty thousand dollars was a snug little sum—quite a snug little sum!

The figure in the chair, with swaying head, breathed stertorously; there was the pound, quick in its tempo, of the trucks beating at the rail joints; the give-and-take of the car in protesting little creaks; and, over all, a muffled roar as the Fast Mail tore through the night—but the Hawk heard none of this. His ear was pressed close against the face of the safe listening for the tumblers' fall, as his fingers twirled the dial knob.

After a little while the Hawk spoke aloud.

“Left, twenty-eight, one quarter... two right, fourteen... two left, eighteen, one-half,” he said.

He straightened up, swung the handle of the safe—and a dismayed, anxious look flashed across his face. There was not much time, very little time—-and he had missed it! How far along those three miles from Burke's Siding to where the Butcher was waiting had the train already come?

He tried again, coolly, methodically—and again he missed.

“I guess I'm out of practice to fall down on a tin box like this!” he muttered grimly. “But the first two are right, that's sure—it's the last turn that's wrong somewhere. Give me another minute or two”—he was twirling the dial knob with deft, quick fingers once more—“that's all I ask, and——”

A sudden jolt flung him forward against the safe. Came the scream of the whistle, the screech of the tight-set brakes, the bump, and jerk, and pound, and grind of the flying train coming to an emergency stop. The limp form of the messenger, sliding down, was almost doubled over the arm of the chair.

In an instant the Hawk had recovered his balance, and, his face set like iron, his jaws clamped hard, he snatched at the knob, and with desperate haste now made another attempt. There were a few seconds left, a few seconds before the train would come finally to a standstill and—no, they were gone now, those seconds—and he had missed again!

His automatic was in his hand as he stood up. It was no longer a question of twenty thousand dollars' worth of unset diamonds—it was a question of his life. There was a bitter smile on his lips, as he ran for the forward door. It looked as though the pitcher had at last gone once too often to the well! The train had stopped now. He reached the door, and opened it guardedly a little way. A great red flare from somewhere ahead lighted up the night. He heard and recognised the Butcher's voice, menacing, raucous, punctuated with vicious oaths:

“Get out of that cab, and get out damned quick! Down you come—jump now! Now, boys, run 'em back, and keep firing down the length of the train as you go; and if these guys don't run faster than you do, let 'em have it in the back! Beat it now—beat it like hell! I'll pull out the minute you're uncoupled. You two grab the rear end as she moves, there's room enough for you, and you can bust in the door, and——”

A fusilade of shots rang out. Flashes cut the black. The Butcher's two companions, evidently driving the engineer and fireman before them, were coming on the run along the trackside from the cab. The Hawk retreated back a step, and closed the car door. He heard the men rush past outside. The fusilade seemed to redouble in intensity; and now, added to it, were shouts and yells from the rear of the train itself, and—if he were not mistaken—answering shots.

His hand on the doorknob, he stood waiting tensely. With the Butcher on guard out there in front, it would have been equivalent to suicide to have opened the door again until he knew the other was back in the cab—against the background of the lighted interior he would have made a most excellent mark for the Butcher!

His eyes swept past the huddled form of the young messenger in the chair, and fixed speculatively on the safe. He nodded suddenly, grimly. Twenty thousand dollars! Well, he wasn't beaten yet—not till he threw down his own hand of his own accord—not till he lost sight of the safe for keeps!

Over the shouts and revolver shots came the sharp, vicious hiss of the air-hose, as it was uncoupled; and then, with a violent jerk, the car started forward, as the Butcher evidently whipped the throttle open. And, coincidently, there was a smash upon the rear door—and the Hawk opened the forward door and slipped out again.

A din infernal was in his ears. Like a maddened thing under the Butcher's unscientific spur, the big ten-wheeler was coughing the sparks heavenward in a volleying stream, while the huge drivers raced like pinwheels in another shower of sparks as the tires sought to bite and hold. And now the rear door of the car crashed inward; the shots came fast as a gatling, and shouts, screams and yells added their quota to the uproar.

The Hawk, crouched by the door, moved suddenly to one side, as he caught the dull, ominous spat of a bullet against one of the panels. The train crew and those of the passengers who were armed were, very obviously, keeping up a running fight from the stalled section of the train, and pumping their bul-lets through the broken rear door and up the aisle of the express car as long as they could hold the range; and, from within, he could distinguish the duller, muffled reports of the Butcher's confederates firing in return, preventing any attempt being made to rush the rear of the car.

And then the sounds began to recede and die away. The men inside the car ceased firing, and he could hear them now moving the safe out from the side of the car. It seemed as though a very long interval of time had been consumed in the hold-up; but in reality he knew it had been little more than a matter of seconds—the time it had taken the two men to run the length of the car, uncouple it, and leap on the rear end. The fight afterwards could hardly count, for once the express car began to pull away the thing was done.

They were moving fast now, and with every instant the speed was increasing. The Hawk clutched at the handrail, and lowered himself to the iron foot-rung which, on the express car, served in lieu of steps. Here, having chosen the opposite side to that of the Butcher at the throttle in the cab, he ran no risk of being observed. This “five-mile crossing,” wherever it was, promised to concern him a great deal more than he had anticipated! He leaned out, and clung there, staring ahead.

The big ten-wheeler was swaying and staggering like a drunken thing; the rush of the wind whipped at his face; a deafening roar sang in his ears. The Fast Mail usually ran fast; but the Butcher was running like a dare-devil, and the bark of the exhaust had quickened now into a single full-toned note deep as thunder.

With a sort of grim placidity, the Hawk clung to the lurching rail. Far ahead along the right of way, a shaft of light riven through walls of blackness, played the headlight. Shadowy objects, trees that loomed up for an instant and were gone, showed on the edge of the wavering ray. They tore through a rock cut, and, in the confined space and in the fraction of a second it took to traverse it, the roar was metamorphosed into an explosion. And then suddenly, as though by magic, the headlight shot off at a tangent, and the glistening lines of steel, that were always converging but never meeting, were gone, and the ray fell full upon a densely wooded tract where leaves and foliage became a soft and wonderful shade of green under the artificial light. The Hawk braced himself—and just in time. The ten-wheeler, unchecked, swung the curve with a mighty lurch, off drivers fairly lifted from the rails. She seemed to hang there hesitantly for a breathless instant, then with a crunch, staggering, settled back and struck into her stride again.

The thunder of the exhaust ceased abruptly, and the speed began to slacken. The Butcher had slammed the throttle shut. At the end of the headlight's ray, that was straight along the track again, a red light flashed up suddenly three times and vanished. The Hawk leaned farther out, tense now, straining his eyes ahead. It was evidently Number Four and Number Seven signalling from “five-mile crossing.”

The Butcher began to check with the “air.” And now, in the headlight's glare, the distance shortened, the Hawk could discern a large wagon, drawn by two horses, that appeared to be backed up close to the right-hand side of the track. Two forms seemed to be tugging at the horses, which equally seemed to be plunging restively—and then, being on the wrong side of the car, the angle of vision narrowed and he could see no more.

The Hawk turned now—his eyes on the door of the car. There was a possibility, a little more than a possibility, that the men inside, knowing that they had reached their destination, would come out this way. No—he had only to keep hidden from the men out there with the wagon until the car stopped—the men within were sliding back the side door. He swung himself still farther out on the foot-rung; then, curving back with the aid of the handrail, flattened himself against the side of the car.

They were close up to the wagon now, and he could hear voices cursing furiously at the horses, as the frightened animals stamped and pawed. And then the car bumped and jerked to a standstill, and the Butcher was bawling from the cab:

“Take the horses out, you blamed fools, and tie 'em back there on the road a bit till we're gone! We'd have a sweet time loading the wagon with them doing the tango every second! Take 'em out! We'll back the wagon up against the car.”

The Hawk lowered himself silently to the ground—to find that the car had come to a stop directly over a road crossing. The men in the car had joined their voices with the Butcher's, and in the confusion now the Hawk slipped quickly along the side of the car, stole around the rear end, and from that point of vantage stood watching the Butcher and his men at work.

He could see quite plainly, thanks to the light from the car's wide-open side door that flooded the scene. The horses had been unharnessed, and were being led away along the road. One of the men in the car jumped to the ground, as the Butcher called out, and together they backed the wagon close up against the car doorway; and then, presently, the men who had accompanied the horses, one carrying a lantern, came running back. The Hawk's eyes, from a general and comprehensive survey of the scene, fixed on the man who until now had not left the car, but who had now sprung down into the wagon and was running a short plank, to be used as a skid evidently, up to the threshold of the car door, which was a little above the level of the wagon. The light shone full in the man's face.

“Number Six—Crusty Kline!” confided the Hawk softly to himself. “I'm glad to know that. The last time I chummed with Crusty was back in little old Sing Sing. Guess he got out for good behaviour—thought he was elected for five spaces yet!”

Crusty spoke now, as he jumped back into the car.

“Look here, Butcher, I'm telling you again, this guy in here's in pretty bad shape.”

“Never mind about that!” replied the Butcher roughly. “Get the safe out! All hands now! We've got no time to monkey with him. He'll come around all right, I guess—anyway, it's none of our lookout!”

The men were bunched together now, three in the doorway of the car and two in the wagon, the safe between them. The Hawk was studying one of the two who stood in the wagon. One was Whitie Jim, as he already knew, but the other had had his back half turned, and the Hawk had not been able to see his face. The safe slid down the plank, and was levered and pushed forward into the middle of the wagon.

“French Pete!” said the Hawk suddenly and as softly as before, as the man he had been watching straightened up and turned around. “Say, I guess Sing Sing's gone out of business—or else somebody left the door open!”

But if the Hawk's words were indicative of a facetious mood, his actions were not. There was a sort of dawning inspiration in the dark, narrowed eyes; and the strong jaw, as it was outthrust, drew his lips into a grim, hard smile. They were spreading a huge tarpaulin over the wagon and safe—and abruptly the Hawk drew back, dropped to his hands and knees, crawled along the trackside on the opposite side of the car again until almost opposite the wagon, and there lay flat and motionless at the side of the road. There was a chance yet, still a chance, a very good chance—for that twenty thousand dollars' worth of unset stones.

“All right, now!” It was the Butcher's voice. “Pull her away a few feet into the clear!” The wagon creaked and rattled. “That's enough! Now get a move on—everybody!”

Steps crunched along the trackside—the Butcher and his two companions obviously making for the cab—and a moment later came the cough of the engine's exhaust, and the express car began to glide past the spot where the Hawk lay.

The Hawk raised himself cautiously on his elbows. Two dark forms and a bobbing lantern were already speeding toward where the horses had been left. The Hawk crawled forward, crossed the track—and paused. The engine and express car were fast disappearing in the distance; the lantern glimmered amongst the trees at the side of the road a good hundred yards away.

There was no shadow to fall across the back of the wagon.

“I said it was a nice night, and that it was strange how some people preferred a moon!” observed the Hawk cheerfully—and, lifting the end of the tarpaulin, he swung noiselessly under it into the wagon, and stretched himself out beside the safe.