A Game Masters guide, detailing the worst horrors in the Werewolf universe. This book features in depth information on the dark parts of the Umbra, those areas corrupted by the Wyrm, Information on Pentex, a giant corporation run by servants of the Wyrm and used to corrupt the world, a large list of monsters and dark spirits serving the Wyrm, and the tribe book for the Black Spiral Dancers, a tribe of Werewolves corrupted by the Wyrm and pulled into it's dark service.