The door slid open and they were in a plain room with doors at the left and right. The outer door closed behind them. The door on the right opened and Murdoch took Waverill through it. They were in a second room of the same size, bare except for a bench along one wall.

The voice said, "Remove your clothing and pile it on the floor."

Waverill complied without protest, and after a second Murdoch did too. "Step back," the voice said. They did.

The clothing dropped through the floor, sluggishly in the light gravity. Murdoch grunted. There were weapons built into his clothes, and he felt uneasy without them.

At the end of the room away from the middle of the building was another door like the one they'd come through. It opened and a robot walked in.

It was humanoid in shape, flesh-colored but without animal details. The head had several features other than the eyes, but none of them was nose, mouth or ears. It stood looking at them for a minute, then said in the familiar voice, "Do not be alarmed if you feel something now."

There was a tingling, then a warmth, then a vibration, and some other sensations not easy to classify. Murdoch couldn't tell whether they came from the robot or not. It was obvious, though, that the robot was scanning them. He resisted an urge to move his hands more behind him. He'd been well satisfied with the delicate surgery, but now he imagined it awkward and obvious.

The robot didn't seem to notice anything.

After a minute the robot said, "Through the door where I entered you will find a bedroom and a bath and a place to cook. It is best you retire now and rest."

Murdoch offered his arm to Waverill, who grumbled a little but came along.