"In that case, I think you ought to place a hyper-relay on his ship."
"I have thought of that, Councilman. He is, however, a suspicious man and I suspect he will find it - however cleverly it might be placed. Of course, it might be placed in such a way that he cannot remove it without crippling the ship, and he might therefore be forced to leave it in place..."
"An excellent notion."
"Except that," said Branno, "he would then be inhibited. He might not go where he would go if he felt himself free and untrammeled. The knowledge I would gain would be useless to me."
"In that case, it appears you cannot find out where he will go."
"I might, for I intend to be very primitive. A person who expects the completely sophisticated and who guards against it is quite apt never to think of the primitive. - I'm thinking of having Trevize followed."
"Followed?"
"Exactly. By, another pilot in another spaceship. See how astonished you are at the thought? He would be equally astonished. He might not think of scouring space for an accompanying mass and, in any case, we will see to it that his ship is not equipped with our latest mass-detection devices."
Compor said, "Madam Mayor, I speak with all possible respect, but I must point out that you lack experience in space flight. To have one ship followed by another is never done - because it won't work. Trevize will escape with the first hyperspatial jump. Even if he doesn't know he is being followed, that first jump will be his path to freedom. If he doesn't have a hyper-relay on board ship, he can't be traced."
"I admit my lack of experience. Unlike you and Trevize, I have had no naval training. Nevertheless, I am told by my advisers - who have had such training - that if a ship is observed immediately prior to a jump, its direction, speed, and acceleration make it possible to guess what the jump might be - in a general way. Given a good computer and an excellent sense of judgment, a follower might duplicate the jump closely enough to pick up the trail at the other end - especially if the follower has a good mass-detector."
"That might happen once," said Compor energetically, "even twice if the follower is very lucky, but that's it. You can't rely on such things."
"Perhaps we can. - Councilman Compor, you have hyper-raced in your time. You see, I know a great deal about you. You are an excellent pilot and have done amazing things when it comes to following a competitor through a jump."
Compor's eyes widened. He almost squirmed in his chair. "I was in college then. I am older now."
"Not too old. Not yet thirty-five. Consequently you are going to follow Trevize, Councilman. Where he goes, you will follow, and you will report back to me. You will leave soon after Trevize does, and he will be leaving in a few hours. If you refuse the task, Councilman, you will be imprisoned for treason. If you take the ship that we will provide for you, and if you fail to follow, you need not bother coming back. You will be shot out of space if you try."
Compor rose sharply to his feet. "! have a life to live. I have work to do. I have a wife. I cannot leave it all."
"You will have to. Those of us who choose to serve the Foundation must be prepared at ail times to serve it in a prolonged and uncomfortable fashion, if that should become necessary."
"My wife must go with me, of course."
"Do you take me for an idiot? She stays here, of course."
"As a hostage?"
"If you like the word. I prefer to say that you will be taking yourself into danger and my kind heart wants her to stay here where she will not be in danger. - There is no room for discussion. You are as much under arrest as Trevize is, and I am sure you understand I must act quickly - before the euphoria enveloping Terminus wears off. I fear my star will soon be in the descendant."
Kodell said, "You were not easy on him, Madam Mayor."
The Mayor said with a sniff, "Why should I have been? He betrayed a friend."
"That was useful to us."
"Yes, as it happened. His next betrayal, however, might not be."
"Why should there be another?"
"Come, Liono," said Branno impatiently, "don't play games with me. Anyone who displays a capacity for double-dealing must forever be suspected of being capable of displaying it again."
"He may use the capability to combine with Trevize once again. Together, they may..."
"You don't believe that. With all his folly and naivete, Trevize goes straight for his goal. He does not understand betrayal and he will never, under any circumstances, trust Compor a second time."
Kodell said, "Pardon me, Mayor, but let me make sure I follow your thinking. How far, then, can you trust Compor? How do you know he will follow Trevize and report honestly? Do you count on his fears for the welfare of his wife as a restraint? His longing to return to her?"
"Both are factors, but I don't entirely rely on that. On Compor's ship there will be a hyper-relay. Trevize would suspect pursuit and would search for one. However Compor - being the pursuer - will, I assume, not suspect pursuit and will not search for one. - Of course, if he does, and if he finds it, then we must depend on the attractions of his wife."
Kodell laughed. "To think I once had to give you lessons. And the purpose of the pursuit?"
"A double layer of protection. If Trevize is caught, it may be that
Compor will carry on and give us the information that Trevize will not be able to."
"One more question. What if, by some chance, Trevize finds the Second Foundation, and we learn of it through him, or through Compor, or if we gain reason to suspect its existence - despite the deaths of both?"