he ship dropped short-lived rocket landing flares, circled and came in for a fast landing on the cleared strip of brittle-crusted ash.

Some distance from the hastily-patched and now hastily abandoned mine buildings, Tod Denver and Darbor paused and shot hasty, fearful glances toward the landed ship. By Earthlight, they could distinguish its lines, though not the color. It was a drab shadow now against the vivid grayness of slopes. Figures tiny from distance emerged from it and scattered across the flat and up into the clustered buildings. A few stragglers went over to explore and investigate Denver's space sled in the unlikely possibility that he and the girl had trusted to its meager and dubious protection.

Besides the ship, the hunters would find evidence of recent occupation in the living quarters, from which Denver had removed the frozen corpse before permitting Darbor to assist with the crude remodeling which he had undertaken. Afterward, when the mine buildings and exposed shafts had been turned out on futile quest for the fugitives, the search would spread. Tracks should be simple enough to follow, once located. Denver had anticipated this potential clue to the pursuit, and had kept their walking to the bare, rocky heights of the spur as long as possible.

He hoped to be able to locate the old Martian working, but the chance was slim. Calculating the shadow-apex of Mitre Peak at 2017 ET was complicated by several unknown quantities. Which peak was Mitre Peak? Was that shadow-apex Earth-shadow or Sun-shadow? And had he started out in the correct direction to find the line of deep-cut arrow markings at all?

The first intangible resolved itself. One mitre-shaped peak stood out alone and definite above the sharply defined silhouettes of the mountains. It must be Mitre Peak. It had to be.

The next question was the light source casting the shadow-apex. There were two possible answers. It was possible to estimate the approximate location of either sun or Earth at a given time, but calculations involved in working out too many possibilities on different Earth-days of the Lunar-day made the Earth's shadow-casting the likeliest prospect. Neither location was particularly exact, and probably Laird Martin had expected his directions to be gone into under less harrowing circumstances than those in which Denver now found himself. With time for trial and error one could eventually locate the place.

But Denver was hurried. He trod upon one of the markings while he still sought the elusive shadow apex.

After that, it was a grim race to follow the markings to the old mines, and to get under cover behind defensible barricades in time to repel invasion.

They played a nerve-wracking game of hare and hounds in tricky floods of Earthlight, upon slopes and spills of broken rock, amid a goblin's garden of towering jagged spires. It was tense work over the bad going, and the light was both distorted and insufficient. In shadow, they groped blindly from arrow to arrow. In the patches of Earthglare, they fled at awkward, desperate speed.

Life and death were the stakes. Life, or a fighting chance to defend life, possible wealth from the ancient workings, made a glittering goal ahead. And ever the gray hounds snapped at their heels, with death in some ugly guise the penalty for losing the game.

Charley was ecstatic. He gamboled and capered, he zoomed and zigzagged, he essayed quick, climbing spirals and almost came to grief among the tangled pinnacles on the ridge of the hogback. He swooped downward again in a series of shallow, easy glides and began the performance all over again. It was a game for him, too. But a game in which he tried only to astound himself, with swift, dizzy miracles of magnetic movement.

Charley enjoyed himself hugely. He was with the two people he liked most. He was having a spirited game among interlaced shadows and sudden, substantial obstacles of rock. He nuzzled the fleeing pair playfully, and followed them after his own lazy and intricate and incredibly whimsical fashion. His private mode of locomotion was not bounded by the possibilities involved in feet and tiring legs. He scampered and had fun.

It was not fun for Tod Denver and Darbor. The girl's strength was failing. She lagged, and Denver slowed his pace to support her tottering progress.

Without warning, the mine entrance loomed before them. It was old and crumbly with a thermal erosion resembling decay.

It was high and narrow and forbiddingly dark.

Tod Denver had brought portable radilumes, which were needed at once. Inside the portals was no light at all. Thick, tangible dark blocked the passage. It swallowed light.

Just inside, the mine gallery was too wide for easy defense. Further back, there was a narrowing.

---

enver seized on the possibilities for barricading and set to work, despite numbed and weary muscles. Walking on the Moon is tiring for muscles acquired on worlds of greater gravity. He was near exhaustion, but the stimulus of fear is strong. He worked like a maniac, hauling materials for blockade, carrying the smaller ingredients and rolling or dragging the heavier. A brief interval of rest brought Darbor to his side. She worked with him and helped with the heavier items. Fortunately, the faint gravity eased their task, speeded it.

For pursuit had not lagged. Their trail had been found and followed.

From behind his barricade, Denver picked off the first two hired thugs of the advance guard as they toiled upward, too eagerly impatient for caution. A network of hastily-aimed beams of heat licked up from several angles of the slope, but none touched the barricade. The slope, which flattened just outside the entrance made exact shooting difficult, made a direct hit on the barricade almost impossible, unless one stood practically inside the carved entrance-way. Denver inched to the door and fired.

The battle was tedious, involved, but a stalemate. Lying on his belly, Denver wormed as close as he dared to the break of slope outside the door. There, he fired snap shots at everything that moved on the slopes. Everything that moved on the slopes made a point of returning the gesture. Some shots came from places he had seen no movement.

It went on for a long time. It was pointless, wanton waste of heat-blaster ammunition. But it satisfied some primal urge in the human male without solving anything.

Until Darbor joined him, Denver did not waste thought upon the futilities of the situation. Her presence terrified him, and he urged her back inside. She was stubborn, but complied when he dragged her back with him.

"Now stay inside, you fool," she muttered, her voice barely a whisper in his communication amplifier.

"You stay inside," he commanded with rough tenderness. They both stayed inside, crouched together behind the barricade.

"I think I got three of them," he told her. "There seemed to be eight at first. Some went back to the ship. For more men or supplies, I don't know. I don't like this."

"Relax," she suggested. "You've done all you can."

"I guess it's back to your gilded cage for you, baby," he said. "My money didn't last."

"Sometimes you behave like a mad dog," she observed. "I'm not sure I like you. You enjoyed that butchery out there. You hated to come inside. What did it prove? There are too many of them. They'll kill us, eventually. Or starve us out. Have you any bright ideas?"

Denver was silent. None of his ideas were very bright. He was at the end of his rope. He had tied a knot in it and hung on. But the rope seemed very short and very insecure.

"Hang on, I guess. Just hang on and wait. They may try a rush. If they do I'll bathe the entrance in a full load from my blaster. If they don't rush, we sit it out. Sit and wait for a miracle. It won't happen but we can hope."

Darbor tried to hug the darkness around her. She was a Martian, tough-minded she hoped. It would be nasty, either way. But death was not pleasant. She must try to be strong and face whatever came. She shrugged and resigned herself.

"When the time comes I'll try to think of something touching and significant to say," she promised.

"You hold the fort," Denver told her. "And don't hesitate to shoot if you have to. There's a chance to wipe them out if they try to force in all at once. They won't, but—"

"Where are you going? For a walk?"

"Have to see a man about a dog. There may be a back entrance. I doubt it, since Martian workings on the Moon were never very deep. But I'd like a look at the jackpot. Do you mind?"

Darbor sighed. "Not if you hurry back."

Deep inside the long gallery was a huge, vaulted chamber. Here, Denver found what he sought. There was no back entrance. The mine was a trap that had closed on him and Darbor.

Old Martian workings, yes. But whatever the Martians had sought and delved from the mooncrust was gone. Layered veins had petered out, were exhausted, empty. Some glittering, crystalline smears remained in the crevices but the crystals were dull and life-less. Denver bent close, sensed familiarity. The substance was not unknown. He wetted a finger and probed with it, rubbed again and tested for taste.

The taste was sharp and bitter. As bitter as his disappointment. It was all a grim joke. Valuable enough once to be used as money in the old days on earth. But hardly valuable enough, then, even in real quantity, to be worth the six lives it had cost up to now—counting his and Darbor's as already lost. First, Laird Martin, with his last tragic thoughts of a tiny girl on Earth, now orphaned. Then the three men down the slope, hideous in their bulged and congealing death. Himself and Darbor next on the list, with not much time to go. All for a few crystals of—Salt!

---

he end was as viciously ironic as the means had been brutal, but greed is an ugly force. It takes no heed of men and their brief, futile dreams.

Denver shrugged and rejoined his small garrison. The girl, in spite of the comradeship of shared danger, was as greedy as the others outside. Instinctively, Denver knew that, and he found the understanding in himself to pity her.

"Are they still out there?" he asked needlessly.

Darbor nodded. "What did you find?"

He debated telling her the truth. But why add the bitterness to the little left of her life? Let her dream. She would probably die without ever finding out that she had thrown herself away following a mirage. Let her dream and die happy.

"Enough," he answered roughly. "But does it matter?"

Her eyes rewarded his deceit, but the light was too poor for him to see them. It was easy enough to imagine stars in them, and even a man without illusions can still dream.

"Maybe it will matter," she replied. "We can hope for a miracle. It will make all the difference for us if the miracle happens."

Denver laughed. "Then the money will make a difference if we live through this? You mean you'll stay with me?"

Darbor answered too quickly. "Of course." Then she hesitated, as if something of his distaste echoed within her. She went on, her voice strange. "Sure, I'm mercenary. I've been broke in Venusport, and again here on Luna. It's no fun. Poverty is not all the noble things the copybooks say. It's undignified and degrading. You want to stop washing after a while, because it doesn't seem to matter. Yes, I want money. Am I different from other people?"

Denver laughed harshly. "No. I just thought for a few minutes that you were. I hoped I was at the head of your list. But let's not quarrel. We're friends in a jam together. No miracle is going to happen. It's stupid to fight over a salt mine, empty at that, when we're going to die. I'm like you; I wanted a miracle to happen, but mine didn't concern money. We both got what we asked for, that's all. If you bend over far enough somebody will kick you in the pants. I'm going out, Darbor. Pray for me."

The blankness of her face-plate turned toward him. A glitter, dark and opaque, was all he could make out.

"I'm sorry," she said. "I know it was the wrong answer. But don't be a fool. He'll kill you, and I'm afraid to be in the dark, alone."

"I'll leave Charley with you."

Denver broke the girl's clasp on his arm and edged slow to the doorway. He shouted.

"Hey, Caltis!"

There was stunning silence. Then a far, muted crackle in his earphones.

A voice answered, "Yes? I'm here. What's on your mind, funny boy?"

"A parley."

"Nuts, but come on out. I'll talk."

"You come up," Denver argued. "I don't trust you."

Big Ed Caltis considered the proposition. "How do I know you won't try to nail me for hostage?"

"You don't. But I'm not a fool. What good would it do even if I killed you. Your men are down there. They'd still want the mine. I don't think they care enough about you to deal. They'd kill us anyhow. Bring your gun if it makes you feel more like a man."

After an interval Big Ed Caltis appeared in the doorway. As he entered Denver retreated into the shadow-zone until he stood close beside the rude barricade.

"I'll bargain with you, Caltis. You can have the workings. Let us go free, with an hour's start in my space sled. I'll sign over any share we could claim and agree never to bother you again. It's no use to a corpse. Just let us go."

Caltis gave a short laugh. In the earphones, it sounded nasty.

"No deal, Denver. I hate your guts. And I want Darbor. I've got both of you where I want you, sewed up. We can sit here and wait. We've plenty of air, food and water. You'll run short. I want you to come out, crawling. She can watch you die, slowly, because I'm not giving you any air, water or food. Then I want her to squirm a while before I kick her back into the sewers. You can't bargain. I have her, you, the workings. I've got what I want."

Hate and anger strangled Denver's reply. Caltis skulked back out of sight. Without moving, Denver hailed him again.

"Okay, puttyface!" Denver screamed. "You asked for it. I'm coming out. Stand clear and order off your thugs or I'll squeeze you till your guts squirt out your nose like toothpaste from a tube. I'll see how much man there is left in you. It'll be all over the slope when I'm through."

His taunt drew fire as he had hoped it would. He dodged quickly behind the shelter of the barricade. A beam of dazzling fire penciled the rock wall. It crackled, spread, flaring to incredible heat and light. It exploded, deluging the gallery with glare and spattering rock.

After the glare, darkness seemed thick enough to slice.

In that second of stunned reaction blindness, Denver was leaping the barricade and sprinting toward the entrance. Caltis came to meet him. Both fired at once. Both missed. The random beams flicked at the rough, timbered walls and lashed out with thunderous violence.

Locked together, the men pitched back and forth. They rocked and swayed, muscles straining. It was deadlock again. Denver was youth and fury. Caltis had experience and the training of a fighter. It was savage, lawless, the sculptured stance of embattled champions. Almost motionless, as forces canceled out. The battle was equal.