He watched the blurred figures of his fellow humans working busily and wondered what new torment they were preparing for him.

He eyed the screens. He occupied a squat hexagonal cell—apparently one of the housing units in the inner city—which was equipped with a wall of viewing tanks. It had taken him more than a year to find out which parts of the maze corresponded to the images on the screens; but by patiently posting markers he had matched the dim images to the glossy reality. The six lowest screens along the wall showed him pictures of areas in Zones A through F; the cameras, or whatever they were, swiveled through 180° arcs, enabling the hidden mysterious eyes to patrol the entire region around each of the zone entrances. Since only one entrance provided safe access to the zone within, all others being lethal, the screens effectively allowed Muller to watch the inward progress of any prowler. It did not matter what was taking place at any of the false entrances. Those who persisted there would die.