This book gives you more detailed information on the Werewolfs biggest foe: The Wyrm From the back of the Book: "Book of the Wyrm includes: - Detailed information on the Black Spiral Dancers, the hideous "lost tribe" of the Garou. - The subsidiaries of Pentex Incorporated and their machinations for power and conquest. - Traits and rules for hordes of creatures, Banes, fomori, dread Incarna and many more minions of the Wyrm."