"Nothing," said Dimanche disgustedly. "His mind froze when we got close. I could feel his shoulderblades twitching as we passed. Anticipated guilt, of course. Projecting to you the action he plans. That makes the knife definite."

Well beyond the window at which the thug watched and waited, Cassal stopped. Shakily he produced a cigarette and fumbled for a lighter.

"Excellent thinking," commended Dimanche. "He won't attempt anything on this street. Too dangerous. Turn aside at the next deserted intersection and let him follow the glow of your cigarette."

The lighter flared in his hand. "That's one way of finding out," said Cassal. "But wouldn't I be a lot safer if I just concentrated on getting back to the hotel?"

"I'm curious. Turn here."

"Go to hell," said Cassal nervously. Nevertheless, when he came to that intersection, he turned there.

It was a Godolphian equivalent of an alley, narrow and dark, oily slow-moving water gurgling at one side, high cavernous walls looming on the other.

He would have to adjust the curiosity factor of Dimanche. It was all very well to be interested in the man who trailed him, but there was also the problem of coming out of this adventure alive. Dimanche, an electronic instrument, naturally wouldn't consider that.

"Easy," warned Dimanche. "He's at the entrance to the alley, walking fast. He's surprised and pleased that you took this route."

"I'm surprised, too," remarked Cassal. "But I wouldn't say I'm pleased. Not just now."