Colonel Mannheim blinked and looked at the ceiling. It took him a minute to re-orient himself. Then he grinned rather sheepishly, realizing that he had dozed off with his clothes on. Even worse, the pressure at his hip told him that he hadn't even bothered to take his sidearm off. He sat up and swung his feet to the floor, then glanced at his wrist. Three in the morning.

And the moral of that, my dear Walther, he told himself, is that a tired man should put on his pajamas first, before he lies down and drinks a Scotch.

He stood up. Might as well put his pajamas on and get to bed. He would have to be back in St. Louis by ten in the morning, so he ought to get as much sleep as possible.

The phone chimed.

He scooped it up and became instantly awake as he heard the voice of Captain Greer from the gun tower that faced the outer wall. "Colonel, the Nipe is just outside the wall of your apartment, in the hallway. I have him in my sights." He was trying to stay calm, Mannheim could tell by his voice, but he rattled the words off with machine-gun rapidity.

Mannheim thought rapidly. Whatever the Nipe was up to, it wouldn't include planting a bomb or anything that might kill anyone accidentally. If there was a life in danger, it was his own, and the danger would come from the Nipe's hands, not from any device or weapon.

He was thankful that it was Captain Greer up in that tower, not an ordinary guard who would have fired the instant he saw the alien through the infra-red-transparent walls. Even so, he knew that the captain's fingers must be tightening on those triggers. No human being could do otherwise with that monster in his sights.

Mannheim spoke very calmly and deliberately. "Captain, listen very carefully. Do not—I repeat, do not, under any circumstances whatever, fire that gun. Understand?"

"Yes, sir."

"What's he doing?"