Werewolf is the first of four books about Michael Cavendish an immortal werewolf. The first book covers his life from his time as a soldier to being turned to a werewolf and details his loves and adventures. Injured in battle Michael is saved and cursed by a gypsy woman who marks him with the sign of the beast. As a mercenary he takes possession of a Keep whose Countess seeing the mark believes him to be the chosen one. She turns him and tries to keep him with her forever. Other members of the pack rebel and he leaves, unaware his enemies will follow. Michael travels as man and beast until a blind girl and her family take him in. He thinks he is safe but his enemies take a terrible revenge.

He murders the leader of his enemies and flees. It is now 1933 and a dark force is coming to power in Germany. His only hope is to find a Wych woman, but after finding her he has to fight a dangerous she-wolf and the German army. They try to escape but their way is barred; the only way out is Dunkirk where the Germans have surrounded the allied forces.