Synopsis: Avalon the Forbidden World was the only Terra-type planet ever to be discovered. But when the scattered remnants of Earth's people sought to migrate there, superstition and politics blocked them. After two thousand years, the domed colonies of a hundred barren worlds became convinced that Avalon was the one real enemy of their existence. Destroy that mystery planet was the cry! Jarn Tybalt, Warlord of the Drusus Colony, dared to make the first trip to Avalon in centuries. He found a world teeming with wonders and enigmas - mutants, monsters, medieval knights, science-working dwarves, and a lost city in the Far North where all the answers could be found! (from the back cover of the first edition)