"Thanks for doing the rounds, El," said Tim. "That's about all. By the way, who was the one you described as 'just tired'?"

"Oh, that was Wyckoff, Sam Wyckoff on the eighth floor."

"Any idea what tired him so much he didn't want to go to the party? I thought we were being pretty careful about fatigue. He's not one of the crew, is he?"

"No ... kitchen helper maybe. He didn't say it was anything in particular. He did seem sort of shot, but he perked up and we had a good talk," added Avery.

"I see."

"Well, if that's all, I'll get along and eat and shoot a couple of games of slotto before I turn in. It's relaxing after sitting over a hot calculator all evening." At the door he turned. "Can't you join me this once?"

"Not tonight. Just a few more things to attend to, thanks."

After Avery left, Daneshaw straightened a few papers aimlessly on the dull green alloid table top. "Tired," he mused, "sort of shot. Might be a case for Doc Keighley. Better see to it. Of course, he might be homesick." He stood up and glanced around the piles of papers. Nothing that couldn't wait till tomorrow.

In three minutes, he was knocking briskly on Wyckoff's door.

There was no answer. Surely the man hadn't gotten to sleep in the twenty minutes since Avery talked to him. He knocked again. Some sort of mumble came from inside. Tim turned the knob and walked in.