He bethought himself of his captors' surprise when they discovered his escape, got back down on hands and knees, pushed the stone back into the exit. It came to a stop with a small click. The hole was plugged. He tried to move the stone. It was latched fast. He realized that the lock must not have been caught or else no amount of pressure would have moved that stone. Backing out into the passage behind the cells, he stood up again. He was free.

Stooping painfully he crept along the wall. He had taken five hundred and twenty-three steps when he stumbled up a stair. Recovering his balance, he climbed up sixteen steps which wound back on themselves, came out in another passage. This second corridor he judged ran directly above the one he had just left. There was still no light. With increasing confidence he began its exploration.

The first thing his groping fingers encountered was a narrow alcove inset in the wall. Like a blind man he passed his hand across the back wall of the alcove, felt a knob-like protuberance, pulled. A small stone plug came out, revealing a peep hole. A ray of light streamed through the aperture. He wasn't blind!

He put his eye to the peep hole, saw a large, delicately furnished room. In the center was a bed on a dais. Several luxurious chairs, fashioned like chaise lounges and upholstered in white fur, squatted invitingly about the floor. A deep-piled aquamarine carpet covered the cold stone blocks under foot. The walls were a solid mass of bas relief. The ancient sculptor had exhibited a robust sense of realism in his choice of subjects.

He felt about the walls, sure that there must be some means of ingress. His fingers discovered a second handle. He pulled. A section of the wall swung back.

For a moment he hesitated like a gray wolf coming into a clearing, then crossed the chamber to the door. Cautiously, he inched it open. A long corridor met his eyes. It was lighted like the chamber with the pale green globes of the Mercurians. Like the chamber too, it was deserted.

He stepped back in the room, drew the door shut, bolted it. With growing curiosity he set about examining his surroundings. If this belonged to Albert Peet's establishment, he surely did himself proud. He discovered a closet full of rich feminine apparel, then a second door leading through a mirror paneled dressing room into a bath with a sunken tub.

Jaro sighed. He stripped off his clothes, filled the tub, let himself into the warm water. Having bathed he searched a small built-in cabinet, found a hair remover used by the Mercurian women on their legs. It doubled for a razor quite successfully. He ran his hand over his chin, laughed, returned to the main chamber. Unlocking the door to the hall in order not to create suspicion, he retreated into the secret passage, shut the door, plugged the peep hole.

A dozen steps further along the corridor, he found a second alcove identical with the last. There was a corresponding peep hole. The room he looked into resembled the other except that its appointments differed. It too, was deserted. He thought everyone must be above celebrating the Festival. He wondered where he was. The last two chambers had held no clue.

A third alcove revealed a room similar to the others except that it was occupied. A pale Mercurian girl was asleep on the bed. Her black hair lay on her white shoulders like stains of ink. A broad band of green metal encircled one naked ankle.