don't know what you believed, Lieutenant. I don't care what you think you saw. You tangled with someone and he stabbed you. He was real enough ... obviously the man who killed Ewers. But you let him get away, so even that isn't too much to your credit.'"

"If I had been you," the kid said, "I've had knocked him down."

"No." For the first time Corriston smiled. "To tell you the truth, the captain is a good guy. He's one of those blunt, moody, terribly human individuals you encounter occasionally, men who speak their minds on all occasions and are instantly sorry they did. You have to like them even when they seem to insult you."

"He made up for it then?"

"I'll say he did. He knew that when we landed the officials would be breathing right down my neck. He wanted to give me every chance. So he kept the officials away from me until I'd convinced myself Ramsey's daughter just couldn't be on board.

"He let me look at every piece of luggage that was taken off the ship. He had some cargo to unload and he let me inspect that too, every crate. Most of the crates were too small to conceal a drugged and unconscious girl—or any girl for that matter. The ones that weren't, he opened for me and let me look inside.

"He let me watch every passenger leave the ship. Then, when all of the passengers had left, he stationed officers in the three main passageways and I went through the ship from bow to stern. I went into every stateroom and into every intership compartment. No one could have kept just a little ahead of me or behind me, dodging back into a compartment the instant I'd vacated it. They would have been instantly spotted by one of the officers.

"The Captain wasn't to blame at all for what happened later ... when I tried to convince the commanding officers here that I was completely sane."

"I see. He must have really liked you."

"I guess he did. And I liked him."

The kid nodded. "And the murderer's still at large. That makes it rough for the sixty odd passengers they're holding in quarantine. How long do you think they'll hold them in the Big Cage?"

"As long as they can. They'll keep them under close guard and increase their vigilance every time there's a suspicious move in the cage. They'll be screened perhaps a dozen times. But most of them are influential people. Most of them have booked passage on the Mars' run liner that's due here next week. They can't hold them forever. They'd start pulling wires on Earth by short wave and there'd be a legislative uproar.

"Suppose they refuse to let them send messages?"

"They won't refuse. I'm sure of that."

The kid was thoughtful for a moment. Then he said: "Tell me more about Ramsey. Just what do you think is happening on Mars?"

"No one knows exactly what is happening," Corriston said. "But to the best of my knowledge the overall picture is pretty ugly. The original settlers have their backs to the wall with a vengeance. Now there are armed guards at their throats. Ramsey has taken over. He has resorted to legal trickery to freeze them out.

"There are perhaps fifty important uranium claims on Mars and Ramsey has consolidated all of the holdings into a single major enterprise. To say that he's cornered the market in uranium would be understating the case. He has taken possession by right of seizure, and the colonists can't get to him. They're living a hand-to-mouth existence while he lives in a heavily guarded stronghold behind three miles of electrified defenses."

The kid nodded again. "Yes, that's the picture when you unscramble it, I guess. But most of it is kept hidden from the general run of tourists."

"Naturally. Ramsey has the power to keep it under wraps."

"Do you think the colonists had anything to do with Clakey's murder and Miss Ramsey's disappearance? Or I guess I should say Henry Ewers' murder."

"Clakey, Ewers—his name doesn't matter. I'm convinced that he was Miss Ramsey's bodyguard."

"But you haven't answered my question."

"I can't answer it with any certainty. Did the colonists hire a killer and book passage for him on the ship? It's difficult to believe that the kind of men who colonized Mars would resort to murder."

"But there are a few scoundrels in every large group of men. And what if they became so desperate they felt they had to fight fire with fire?"

"Yes, I'd thought of that. It may be the answer."

5

A half-hour later the kid was taken away and Corriston found himself completely alone. There are few events in human life more unnerving than the totally unexpected removal of a sympathetic listener when dark thoughts have taken possession of a man.

The kid wasn't forcibly removed from the cell. He left without protesting and no rough hands were laid on him, no physical violence employed. But he was not at all eager to leave, and if the guards who came for him had eyed him less severely, his attitude might have been the opposite of complacent.

"Sorry, kid," one of them said. "Your discharge has been postponed. Somebody on the psycho-staff wants to give you another test. I guess you didn't interpret the ink blots right."

He looked at Corriston and shook his head sympathetically. "It's tough, I know. Once you're here waiting to be released can wear you down. I shouldn't be saying this, but it stands to reason it might even slow up your recovery a bit. It's easy to blame the docs, but you've got to try to understand their side of it. They have to make sure."

When the door clanged shut behind the kid, Corriston crossed to his cot, sat down, and cradled his head in his arms. The fact that he was still free to go outside and walk around the Station was no comfort at all. That kind of freedom could be worse than total confinement. He could never hope to escape from observation. The guards were under orders to watch him, and wherever he turned there'd be eyes boring into the back of his neck.

On Earth a man under surveillance could duck quickly into a side street, run and weave about, and emerge on a broad avenue in the midst of a crowd. He could walk calmly then for a block or two, and turn in at a bar. He could drown his troubles in drink.

There were bars on the Station, of course. But Corriston knew that if he tried to mingle with officers of his own rank on the upper levels, he'd quickly enough find himself drinking alone. He could picture the off-duty personnel edging quickly and resentfully away from him, as though he'd suddenly appeared in their midst with a big, yawning hole in his skull.

Suddenly utter weariness overcame Corriston. He loosened his belt, elevated his legs, and relaxed on the cot.

He was asleep almost before he could close his eyes. How long he slept he had no way of knowing. He only knew that he was awakened by a sound—the strangest sound a man could hear in space. It was as if a gnat or a mosquito had developed a sudden, avaricious liking for his blood-type and was determined to gorge itself to bursting at his expense.

The buzzing seemed to go on interminably as he hovered between sleeping and waking. On and on and on, with absolutely no letup. Then, abruptly, it ceased. There was a faint swishing sound and something solid thudded into the hardwood directly above him.

With a startled cry Corriston leapt from the cot, caught the iron edge of the bed-guard to keep from falling, and stared up in horror at the shining expanse of wall space overhead.

The cell was in almost total darkness. But from the barred window opposite, a faint glimmer of light penetrated in a diffuse arc, just enough light to enable him to make out the quivering stem of the barb.

It was a barb. This was so beyond any possibility of doubt. It had lodged in the hardwood scarcely a foot above his cot and it was still quivering.

Cold sweat broke out on Corriston's palms as he realized how close death had come, and how almost miraculous had been his escape. Had he raised himself