The gigantic world known as Big Planet had become a wilderness of strange peoples and weird cultures as a result of having been the dumping ground for every crackpot and malcontent that ever emigrated from the Earth. Somewhere in its unmapped vastness a plot was being hatched to disturb the peace of the mother world's civilization. This novel was previously published under the titles Planet of the Damned and Slaves of the Klau. All Jack Vance titles in the SFGateway use the author's preferred texts, as restored for the Vance Integral Edition (VIE), an extensive project masterminded by an international online community of Vance's admirers. In general, we also use the VIE titles, and have adopted the arrangement of short story collections to eliminate overlaps.