"Wait," he said. He paused, listening for a moment before he opened it, then slipped quietly into the hall, closing the door carefully behind him.

He's like a cat, Crag thought for the thousandth time, watching the closed door. He was a man who seemed forever listening; a heavy hulking man who walked on velvet feet; a man with opaque eyes who saw everything and told nothing. Gotch would return.

Despite the fact the grizzled Colonel had been his mentor for over a year he felt he hardly knew the man. He was high up in the missile program—missile security, Crag had supposed—yet he seemed to hold power far greater than that of a security officer. He seemed, in fact, to have full charge of the Aztec project—Step One—even though Dr. Kenneth Walmsbelt was its official director. The difference was, the nation knew Walmsbelt. He talked with congressmen, pleaded for money, carried his program to the newspapers and was a familiar figure on the country's TV screens. He was the leading exponent of the space-can't-wait philosophy. But few people knew Gotch; and fewer yet his connections. He was capable, competent, and to Crag's way of thinking, a tough monkey, which pretty well summarized his knowledge of the man.

He felt the elation welling inside him, growing until it was almost a painful pleasure. It had been born of months and months of hope, over a year during which he had scarcely dared hope. Now, because a man had died....

He sat looking at the ceiling, thinking, trying to still the inner tumult. Only outwardly was he calm. He heard footsteps returning. Gotch opened the door and entered, followed by a second man. Crag started involuntarily, half-rising from his chair.

He was looking at himself!

"Crag, meet Adam Crag." The Colonel's voice and face were expressionless. Crag extended his hand, feeling a little silly.

"Glad to know you."

The newcomer acknowledged the introduction with a grin—the same kind of lopsided grin the real Crag wore. More startling was the selfsame hairline scar traversing his cheek; the same touch of cockiness in the set of his face.

Gotch said, "I just wanted you to get a good look at yourself. Crag here"—he motioned his hand toward the newcomer—"is your official double. What were you planning for tonight, your last night on earth?"