It took quite a while to get where he was going, since it involved hiding and ducking two or three more times along the way, but he finally reached the big compartment where the water repurifiers were. He climbed up the ladder to the top of the reserve tank, opened the hatch, and emptied the contents of the jar into the ship's water supply.

"That ought to do it," he said to himself. Smiling, he carefully smashed the jar and dropped the fragments down the waste chute. He surveyed his handiwork for a moment, then turned and headed back.

He hadn't been seen going down, and he didn't want to be seen going out.

If anyone even suspected that he had tampered with the water supply, all they would have to do would be to run the water through the purifiers.

That would undo everything Wayne had been carefully preparing.

He made his way safely back up to the main deck and headed through the quiet ship toward the airlock. He wasn't so lucky this time; a guard saw him.

"Where you goin', Captain?" the guard demanded, starting to lift his gun. "Seems to me you ought to be in the brig, and--"

Wayne made no reply. He brought his gun up in a rapid motion and beamed the man down. The guard toppled, a hurt expression on his face.

Wayne raced to the airlock. He didn't bother with a s.p.a.cesuit--not _now_, when he knew that the air was perfectly harmless outside. He opened the inner door, closed it, and opened the outer door.

Then, grinning gleefully, he pressed the b.u.t.ton that would start the pumping cycle. The outer door started to close automatically, and Wayne just barely managed to get outside and onto the ladder before it clanged shut. As soon as the great hatch had sealed itself, the pumps started exhausting the air from the airlock. No one could open the doors until the pumping cycle was over.

He climbed down the ladder and began walking over toward the western wall. He would have to keep away from the ship for a while, and the rocks were as good a place as any to hide out.

It was dark. Fomalhaut had set, leaving the moonless planet in utter blackness, broken only by the cold gleam of the stars. The lights streaming from the portholes of the _Lord Nelson_ gave a small degree of illumination to the valley.

The valley. It was spread out before him, calm and peaceful, rippling dunes of sand curling out toward the mountains. The valley, he knew, was a betrayer--calm and quiet above, alive with an army of hideous vermin a few feet below its surface.

He started to walk, and moistened his lips. He knew he was going to get awfully thirsty in the next few hours, but there was not the slightest help for it. There hadn't been any way to carry water from the ship.

"I can wait," he told himself. He stared back at the circular bulk of the _Lord Nelson_ behind him, and his fingers trembled a little. He had known, when he joined the Corps, that s.p.a.ce was full of traps like this one--but this was the first time he had actually experienced anything like this. It was foul.

Something slammed into his boot sole, and this time Wayne knew what it was.

"Persistent, aren't you!" He jerked his foot up. This monster hadn't stuck as the other one had, but he saw the tip of the needle-beak thrashing around wildly in the loose sand. Wayne thumbed the gun up to full power, and there was a piercing shriek as the gun burned into the sand. There was a sharp shrill sound, and the odor of something burning.

He spat.

The little beasts must be all over the floor of the valley! Scurrying frantically, like blood-red giant crabs, sidling up and down beneath the valley, searching upward for things to strike at. How they must hate his metamagnetic boots, he thought!

He kept on walking, expecting to feel the impact of another thrust momentarily, but he was not molested again. _They must be getting wise_, he thought. _They know they can't get through my boots, and so they're leaving me alone. That way they don't call attention to themselves._

A new, more chilling question struck him:

_Just how smart are they?_

He had made it to the wall and was climbing up the treacherous slope when the airlock door opened, and someone stood outlined in the bright circle of light that cut into the inky blackness. An amplified voice filled the valley and ricocheted back off the walls of the mountains, casting eerie echoes down on the lone man on the desert.

"CAPTAIN WAYNE! THIS IS COLONEL PETERSEN SPEAKING. DON'T YOU REALIZE THAT YOU'RE A SICK MAN? YOU MAY DIE OUT THERE. COME BACK. THAT'S AN ORDER, CAPTAIN. REPEAT: COME BACK. THAT'S AN ORDER!"

"I'm afraid an order from you just doesn't hold much weight for me right now, Colonel," Wayne said quietly, to himself. Silently he went on climbing the escarpment, digging into the rough rock.

He kept on climbing until he found the niche for which he had been heading. He dragged himself in and sat down, as comfortably as possible.

He began to wait.

Dawn came in less than three hours, as Fomalhaut burst up over the horizon and exploded in radiance over the valley. With dawn came a patrol of men, slinking surrept.i.tiously across the valley, probably with orders to bring him in. Wayne was ensconced comfortably in his little rock niche, hidden from the men in the valley below, but with a perfect view of everything that went on. The wind whistled around the cliffs, ceaselessly moaning a tuneless song. He felt like standing up and shouting wildly, "Here I am! Here I am!" but he repressed the perverse urge.

The patrol group stood in a small clump in the valley below, seemingly waiting for something. Moments pa.s.sed, and then it became apparent what that something was. Hollingwood, the metallurgist, appeared, dragging with him the detector. They were going to look for Captain Wayne with it, just as they had searched out the double-nucleus beryllium.

Wayne frowned. It was a possibility he hadn't thought about. They could easily detect the metal in his boots! And he didn't dare take them off; he'd never make it back across that h.e.l.lish stretch of sand without them. He glanced uneasily at his watch. _How much longer do I have to keep evading them?_ he wondered. It was a wearing task.

It looked as though it would be much too long.

The muzzle of the detector began to swing back and forth slowly and precisely, covering the valley inch by inch. He heard their whispered consultations drifting up from below, though he couldn't make out what they were saying.

They finished with the valley, evidently concluding he wasn't there, and started searching the walls. Wayne decided it was time to get out while the getting was good. He crawled slowly out of the niche and wriggled along the escarpment, heading south, keeping low so the men in the valley wouldn't see him.

Unfortunately, he couldn't see them either. He kept moving, hoping they wouldn't spot him with the detector. He wished he had the metamagnetic hand grapples with him. For one thing, the sharp rock outcroppings sliced his hands like so much meat. For another, he could have dropped the grapples somewhere as a decoy.

_Oh, well, you can't think of everything_, Wayne told himself. He glanced at his watch. How long was it going to take?

He heard the sc.r.a.pe of boot leather on a rock somewhere ahead of him. He glanced up sharply, seeing nothing, and scowled. They had spotted him.

They were laying a trap.

Cautiously, he climbed over a huge boulder, making no sound. There was one man standing behind it, waiting, apparently, for Wayne to step around into view. He peered down, trying to see who it was. It seemed to be Hollingwood, the dignified, austere metallurgist.

Wayne smiled grimly, picked up a heavy rock, and dropped it straight down, square on the man's helmet. The plexalloy rang like a bell through the clear early-morning air, and the man dropped to his knees, dazed by the shock.

Knowing he had just a moment to finish the job, Wayne pushed off against the side of the rock and plummeted down, landing neatly on the metallurgist's shoulders. The man reeled and fell flat. Wayne spun him over and delivered a hard punch to the solar plexus. "Sorry, Dave," he said softly. The metallurgist gasped and curled up in a tight ball.

Wayne stood up. It was brutal, but it was the only place you could hit a man wearing a s.p.a.ce helmet.

_One down_, Wayne thought. _Fifty-eight to go._ He was alone against the crew--and, for all he knew, against all fifty-nine of them.

Hollingwood groaned and stretched. Wayne bent and, for good measure, took off the man's helmet and tapped him none too gently on the skull.

There was the sound of footsteps, the harsh _chitch-chitch_ of feet against the rock. "He's up that way," he heard a deep voice boom.

That meant the others had heard the rock hitting Hollingwood's plexalloy helmet. They were coming toward him.

Wayne sprang back defensively and glanced around. He hoped there were only five of them, that the rule of six was still being maintained.

Otherwise things could become really complicated, as they hunted him relentlessly through the twisted gulleys.

He hated to have to knock out too many of the men; it just meant more trouble later. Still, there was no help for it, if he wanted there to be any later. He thought of the bleached bones of the crew of the _Mavis_, and shuddered.