Step five: Devray slammed a complete covert tracer on that account, so that no funds could enter or leave it without his knowing all about it. He just barely remembered step six-unfreezing the rest of the planetary banking system. If he had forgotten that step, there would have been a small matter of a planetary financial crash on his conscience. As it was, the system had been down for less than three minutes. Even the richest of speculators, with the hugest of accounts, would be unlikely to notice the loss of three minutes’ interest.

There was nothing left to do but pull up the account in question and find out who owned it. And then it would be all over. He would know who had received the ransom. And it would not be much of a leap of logic to assume that person had perpetrated the kidnapping.

Justen was quite sure it would be a completely wrong and inaccurate leap of logic, but never mind that. He would play the game through all the same.

He was virtually certain what name would come up on the screen when he placed the query, certain enough that there was even a trace of anticlimax about it when it appeared on the screen and he knew he had guessed right. But, still and all, it was the last piece of the puzzle. It all fit. Everything, everything, pointed to this one suspect.

Which was exactly why Justen Devray was absolutely certain this particular suspect was completely innocent. But no sense letting the real culprit know that. He stood up from behind his desk and went to the outer office. “Sergeant Sones,” he said to the duty officer. “Send out an arrest team. Take Jadelo Gildern into custody on the charge of kidnapping Simcor Beddle.”

“Sir?” the astonished officer asked. “Jadelo Gildern?”

“I know,” Justen said. “Trust me on this one. We have more evidence than we need. Have him picked up.” He headed back into his own office and sat back down at his desk. He needed to think things through. For the briefest of moments, he wondered if he had figured it out properly. He was working on the assumption that Gildern was being framed. But suppose Gildern really had done it? The man certainly had means, motive, and opportunity.

But no. It was ridiculous. Jadelo Gildern stole other people’s secrets for a living. Surely he could have done a better job of covering his own tracks. It had been far too easy to track the funds to Gildern. Devray felt certain that when Gildern set up a money-laundering operation, the money got clean and stayed clean. He would never have set things up to deliver the ransom to a named account.

No. Justen had been meant to trace the funds. The ransom demand for money had never been anything more than a way to funnel the ransom to Gildern’ s account as a way of discrediting him. Justen was sure he had that right. No doubt the real kidnappers had a watch on Gildern. They would know he had been arrested. Good. Let them think Devray was following the wrong trail instead of the right one.

Of course, the trouble was, Justen was not following any other trail at all. He still had Simcor Beddle missing, a bomb missing, and a comet headed toward the planet.

What he didn’t have was the slightest idea of how to find the first two items on that list before the third item dug a massive crater on top of all of them.

Fiyle. He would have another crack at Fiyle. No doubt the man could tell a lot more than he had. It was starting to dawn on Devray that he hadn’t gotten answers to a lot of his questions-mostly for the very good reason that he had never actually asked them. It was time to go back in there, question him again, right from the top, and then

There was a quiet knock at the door. It opened up, and Sergeant Sones stuck his head in. “Excuse me interrupting, sir, but I thought you ought to know. A robot calling himself Caliban has come to see you. He says he’s here turn to himself in.”

“SO YOU SAY you had nothing to do with this case, but you still want to turn yourself in,” said Devray, considering the robot who stood on the other side of his desk.

“That is correct,” said Caliban. “Dr. Leving informed me of the kidnapping, and I informed Prospero. Dr. Leving was concerned that the police activity might well cause the New Law robots additional difficulty in their evacuation, if they somehow got in your way. My concerns were somewhat more direct. We have had dealings before, you and I. Your basic view seemed at that time that both myself and the New Law robots were suited only for extermination, and I have no reason to believe your views have changed. There is also a notion that has been bandied about that suggests that, because I am a No Law robot, I am in theory capable of harming humans, and of other crimes. From there, somehow, comes the assumption that I am guilty of whatever crime is under discussion. Besides which, I have no great love for Simcor Beddle. I might well be a tempting suspect.”

Devray did not speak for a moment. Less than an hour ago, he had felt genuine shock and disgust at the idea of Beddle and Gildern wiping out the New Law robots. It was mortifying in the extreme to have Caliban, of all beings, remind him that he himself had favored exactly such a policy in the past. And what difference could it make to those who were to be exterminated if their murders had official, legal, sanction?

There were other factors, of course. He forced all thought of emotion and sentiment from his mind. The only reason Caliban was not at the top of his suspect list was that Devray had ordered a watch on the No Law robot the moment he was reported to be in Depot, precisely because Devray did suspect Caliban of things, based on precisely the sort of illogic Caliban had just described. The watch robots themselves provided not only an alibi for Caliban during the time of the kidnap, but also were able to confirm that he had not spoken with Fiyle since the time at which Fiyle had claimed he had overheard Gildern and Beddle plotting together. Devray chided himself for failing to put a watch on Fiyle. It would have been damned useful to know about his movements.

“You are no longer a suspect in this case,” Devray said at last. “There is not only no evidence against you, but evidence that puts you definitively in the clear.”

“Nonetheless, I wish to be held in custody.”

“And why is that?”

“Because, sooner or later, the fact of Simcor Beddle’s kidnapping will become public. There are many humans who will jump to the conclusion that I am guilty simply because I am the No Law robot. I have no desire to meet any such humans on the street. Secondly, there are many uninformed persons who confuse my No Law status with that of the New Law robots. New Law robots cannot harm human beings any more than Three-Law robots can. But people forget that. A mob might well decide to take out their anger over Beddle’s kidnapping on the next New Law robot who happened to walk past. If, when the kidnapping became publicly known, you were able to report that the arch-fiend Caliban the No Law robot was already in custody, it might well prevent public bias from becoming dangerously inflamed against the New Laws.”

“Sooner or later, we’ll catch the real perpetrators,” said Justen. “Then we’d have to let you go. Suppose the mobs decide you must be guilty because you were in jail, and decide to take matters into their own hands?”

“It is a chance I am willing to take,” Caliban said. “At least I will have done what I could to keep others from being endangered.”

Devray regarded the big, red, angular robot again. Caliban was offering himself as a kind of hostage, a way of keeping the mob from blaming others. Plainly, Caliban had a firm grasp on human psychology-and also an extremely low opinion of it. It was a hell of an indictment against humanity that Caliban had almost certainly read the situation precisely right. “Very well,” he said at last. “You can have the cell next to Fiyle.”