men leaped out. The propulsion units in their hands guided them toward the prison asteroids.
"Give them all anaesthetic except Sager and Pederson," Reinhardt ordered. "They won't need it." Then, with a note of apology, "I'm sorry we'll have to anaesthetize you, but you've been in one position so long that moving you will be rather painful. We have to get you to a hospital quickly."
The minds of the six prisoners were frantically pounding questions at the PD chief, but he gave them no answer. "No; wait until you're better."
The spacesuited rescuers went to the "back" of each asteroid and injected sleep-gas into the oxygen line that ran from the tank to the spacesuit of the prisoner.
Houston could smell the sweetish, pungent odor in his helmet. Just before he blacked out, he hurled one last accusing thought at Reinhardt.
"You're the one who's been framing Controllers!"
"Naturally, Houston," came the answer. "How else could I get you out here?"
Houston woke up in a hospital bed. He was weak and hungry, but he felt no pain. As he came up from unconsciousness, he felt a fully awake mind guiding him out of the darkness.
It was Reinhardt.
"You're a tough man, Houston," he said mentally. "The others won't wake up for a while yet."
He was sitting on a chair next to the bed, holding a smouldering cigarette in one hand. He looked strange, somehow, and it took Houston a moment to realize that there was a smile on that broad, normally expressionless face.
Houston focussed his eyes on the man's face. "I want an explanation, Reinhardt," he said aloud. "And it better be a damned good one."
"I give you free access to my mind," Reinhardt said. "See for yourself if my method wasn't the best one."
Houston probed. The explanation, if not the best, was better than any Houston could have thought of.
When the hatred of the normal-minded people of Earth had been turned against the Controllers because of the actions of a few megalomaniacs, it had become obvious that legal steps had to be taken to prevent mob violence.
It had been Reinhardt himself who had suggested the Penal method to the UN government. At first, he had simply thought of it as a method to keep the Controllers alive until he could think of something better. But when he had discovered, by accident, what a small group of Controllers, alone in space, could do, he had set up the present machinery.
As soon as a Controller was spotted, a careful frame-up was arranged. Then, when several had been found, they were arrested in quick succession and sent to the asteroids.
Always and invariably, they had done what Houston's group had done—the sane or potentially sane ones had improved themselves tremendously, while the megalomaniacs had lapsed into catatonia.
"Why couldn't it be done on Earth?" Houston asked.
"We tried it," Reinhardt said. "It didn't work. Safe, on Earth, surrounded by Normals, a Controller still feels the hatred around him. He can't open his mind completely. Only the certain knowledge of impending death, and a complete freedom from the hatred of Normals can free the mind.
"And that's why you couldn't be told beforehand; if you knew you were going to be rescued, you wouldn't open up."
Houston nodded. It made sense. "Where are we now?" he asked.
"Antarctica," said Reinhardt. "We've built an outpost here—almost self-sufficient. When you're in better shape physically, I'll show you around."
"Do you mean that everyone who's been arrested is here, in Antarctica?"
Reinhardt laughed. "No, not by a long shot. Most of us are back out in civilization, searching for new, undiscovered Controllers, so that we can frame them. And, of course, some of us—the insane ones—have died. They will themselves to die when the going gets too tough."
"Searching for recruits? Then the Group that Dorrine was working for was—"
Reinhardt shook his head. "No. They were going about it the wrong way, just as you thought. We picked up the whole lot of them last week; they're occupying the asteroids now."
"What do you do with the insane catatonics?"
"Put them under hibernene and keep them alive. We hope, someday, to figure out a method of restoring their sanity. Until then, let them sleep."
Houston narrowed his eyes. "How long have you known I was a Controller, Reinhardt?"
The Prussian smiled. "Ever since you first tried to probe me. Fortunately, my training enabled me to put up a shield that you couldn't penetrate; I seemed like a Normal to you.
"I kept you on because I knew you'd be useful in cracking Lasser and his gang when the time came. No one else could have done what you did that night."
"Thanks," Houston said sincerely. "What's going to happen now? After I get well, I mean."
"You'll do what the others have done. A little plastic surgery to change your face a trifle, a little record-juggling to give you a new identity, and you'll be ready to go back to work for the PD Police.
"If anyone recognizes you, it's easy to take over their minds just long enough to make them forget. We allow that much Controlling."
"And then what?" Houston wanted to know. "What happens in the long run?"
"In a way," said Reinhardt, "your friend Sager was right. The Controllers will eventually become the rulers of Earth. But not by force or trickery. We must just bide our time. More and more of us are being born all the time; the Normals are becoming fewer and fewer. Within a century, we will outnumber them—we will be the Normals, not they.
"But they'll never know what's going on. The last Normal will die without ever knowing that he is in a world of telepaths.
"By the time that comes about, we'll no longer need the Penal Cluster, since Controllers will be born into a world where there is no fear of non-telepaths."
"I wonder," Houston mused, "I wonder how this ability came about. Why is the human race acquiring telepathy so suddenly?"
Reinhardt shrugged. "I can give you many explanations—atomic radiation, cosmic rays, natural evolution. But none of them really explains it. They just make it easier to live with.
"I think something similar must have happened a few hundred thousand years ago, when Cro-Magnon man, our own ancestors, first developed true intelligence instead of the pseudo-intelligence, the highly developed instincts, of the Neanderthals and other para-men.
"Within a relatively short time, the para-men had died out, leaving the Cro-Magnon, with his true intelligence, to rule Earth."
Reinhardt stood up. "Why is it happening? We don't know. Maybe we never will know, any more than we know why Man developed intelligence." He shrugged. "Perhaps the only explanation we'll ever have is to call it the Will of God and let it go at that."
"Maybe that's the best explanation, after all," Houston
