"Now we have him, Tolliver," he said, with heavy triumph, and these ominous words added the final stress to Martin's overwhelming burden. With a mad cry he rushed past St. Cyr, wrenched open a door, and fled.

From behind him came Erika's Valkyrie voice.

"Leave him alone! Haven't you done enough already? Now I'm going to get that contract release from you before I leave this room, Tolliver Watt, and I warn you, St. Cyr, if you—"

But by then Martin was five rooms away, and the voice faded. He darted on, hopelessly trying to make himself slow down and return to the scene of battle. The pressure was too strong. Terror hurled him down a corridor, into another room, and against a metallic object from which he rebounded, to find himself sitting on the floor looking up at ENIAC Gamma the Ninety-Third.

"Ah, there you are," the robot said. "I've been searching all over space-time for you. You forgot to give me a waiver of responsibility when you talked me into varying the experiment. The Authorities would be in my gears if I didn't bring back an eyeprinted waiver when a subject's scratched by variance."

With a frightened glance behind him, Martin rose to his feet.

"What?" he asked confusedly. "Listen, you've got to change me back to myself. Everyone's trying to kill me. You're just in time. I can't wait twelve hours. Change me back to myself, quick!"

"Oh, I'm through with you," the robot said callously. "You're no longer a suitably unconditioned subject, after that last treatment you insisted on. I should have got the waiver from you then, but you got me all confused with Disraeli's oratory. Now here. Just hold this up to your left eye for twenty seconds." He extended a flat, glittering little metal disk. "It's already sensitized and filled out. It only needs your eyeprint. Affix it, and you'll never see me again."

Martin shrank away.

"But what's going to happen to me?" he quavered, swallowing.