Muller had been sent to spy on the first alien race mankind had ever encountered. Discovered, he had been cursed by them with a terrible power that made his presence unbearable to his fellow human beings. Embittered, he'd chosen to live out his life in an abandoned city of murderous mazes on a long-dead planet. But now men must enter Muller's deadly labyrinth and lure him out: for his dreadful power has made him the only man capable of communicating with still another terrifying race of alien beings.