Corriston stared down at the still unconscious guard, lying stretched out unclothed on the floor of the cell, then he turned, patting the guard's gun which now nestled in its transferred holster on his angular, bony hip. Well, there were perhaps even worse ways of ending up, and it was certainly a destiny almost universally shared. He walked out through the open door of the cell without a backward glance. He had changed his plans completely now. The complicated structure of the mask between his hands had so completely reassured him as to his complete sanity, that he was no longer under a compulsion to return to the Selector Compartment for additional proof. All of the pieces were coming together and melting into a pattern that remained obscure only because there was still so much about it that he did not understand. He knew there was a killer loose on the Station, the same one who had been loose on the ship that had taken him to the Station. He knew about a poisoned barb that had killed one man and had barely missed killing Corriston himself. Dismiss the killer for the moment. There was Helen Ramsey, the wealthiest girl on Earth. Think about Ramsey himself and what his wealth had done to Mars. Think about the colonists on Mars, men who had endured unimaginable hardships and privation to stake out uranium claims which Ramsey did not want them to have. Think about the freighter that had gone out of control. Think about Clement. Think very _hard_ about Clement. The tragedy had shaken him, had given him the look of a very guilty man. He had not wanted it to happen. He had been alarmed, appalled. Yes, think about Clement--that very secretive man. The killer? You can't get rid of him, can you? He keeps coming back into your mind. The killer had not tried to spare Helen Ramsey. He had killed her bodyguard and ripped a mask from her face. No attempt at protection there. But Clement could not have known about that. He had evidently been searching for Helen Ramsey himself. The news that she had been found had startled him, had given him a visible jolt. Corriston did not think that the pattern would dissolve. A few of its features were becoming too clear now, the implications too inescapable. There was something going on that was ugly at the core of it, and the coming of the killer had simply brought it out into the open. Not too much into the open as yet perhaps, but the handwriting on the wall had at least become almost readable. Perhaps the accident to the freighter had also helped to bring it into the open. In some obscure way everything seemed to dovetail: Ramsey; the situation on Mars; Clement and the freighter; a twice disappearing Helen Ramsey; and an accusation of space-shock which was completely false and unjustified. Each seemed to hover just above the center of a very definite pattern. And so did the masks! The masks in particular. Think, think hard about the masks and what the very existence of such masks on the Station implied.