"Instantly," said Browne. "He never got a chance to do anything. How much power did you use?"

"Only first stage," said Lesbee. "But the machine-driven thought pulses in that would interfere with just about every magnetic field in his body. He couldn't do another coherent thing."

Browne said in a hushed tone, "It's got to be. He'll be out of control in one of the corridors, completely at our mercy." He grinned. "I told you I knew how to defeat him—because, of course, he was already defeated."

Lesbee considered that for a long moment, eyes narrowed. He realized that he accepted the explanation, but that he had preparations to make, and quickly—before Browne got suspicious of his delay.

He turned to the board and switched on the intercom. "People," he said, "strap yourselves in again. Help those who were injured to do the same. We may have another emergency. You have several minutes, I think, but don't waste any of them."

He cut off the intercom, and he activated the closed-circuit intercom of the technical stations. He said urgently, "Special instruction to Technical personnel. Report anything unusual, particularly if strange thought forms are going through your mind."

He had an answer to that within moments after he finished speaking. A man's twangy voice came over: "I keep thinking I'm somebody named Dzing, and I'm trying to report to my owners. Boy, am I incoherent!"

"Where is this?"

"D—4—19."

Lesbee punched the buttons that gave them a TV view of that particular ship location. Almost immediately he spotted a shimmer near the floor.