The difference between Martin's condition and that of the ordinary schizophrenic had been that Martin's little dream world had actually existed. It had been an almost exact counterpart of the world that had existed in the perfectly sane, rational mind of his brother, Bart. It had grown and developed as Bart had, fed by the one-way telepathic flow from the stronger mind to the weaker. There had been two Barts--and no Mart at all. But there had been only one human being between them. Bart Stanton had been a strong, capable, intelligent, active human being. The duplicate of his mind was just a recording in the mind of a useless, radiation-blasted hulk. And then the Neurophysical Institute had come into the picture. A new process had been developed by Dr. Farnsworth and his crew, by which a human being could be reconstructed--made, literally, into a superman. All the techniques had been worked out in careful and minute detail. But there was one major drawback. Any normal human body would resist the process--to the death, if necessary--just as a normal human body will resist a skin graft from an alien donor or the injection of an alien protein. But the radiation-damaged body of Martin Stanton had had no resistance of that kind. It had long been known that deep-penetrating ionizing radiation had that effect on an organism. The ability to resist was weakened, almost destroyed. With Martin Stanton's body--perhaps--the process might work. So Bartholomew Stanton, who had become Martin's legal guardian after the death of their mother, had given permission for the series of operations that would rebuild his crippled brother. The telepathic link, of course, had to be shut off--for a time, at least. If it remained intact, Martin would never be able to think for himself, no matter what was done to his body. Part of that cutting-off process could be done during the treatment of Martin--but only if Bartholomew would co-operate. He had done his part. He had submitted to deep hypnosis, and had allowed himself to be convinced that his name was Stanley Martin, to think of himself as Stanley Martin. The Martin name was one that the real Martin's mind would reject utterly. That mind wanted nothing to do with anything named Martin. "Stanley Martin," then, had gone out to the asteroids. In his mind had been implanted the further instructions that he was not to return to Earth nor to attempt to investigate the Nipe under any circumstances. The simple change of name and environment had been just enough to snap the link during a time when Martin's brain had been inactivated by cold therapy and anesthetics. Only the sense of identity had remained. The patient was still "Bart"--but now he was being forced to think for himself. Mannheim had used them both, naturally. Colonel Mannheim had the ability to use anyone at hand, including himself, to get a job done. Stanton looked at his watch. It was almost time.