Cycle of the Werewolf is a horror novella by American writer Stephen King, featuring illustrations by comic-book artist Bernie Wrightson. Each chapter is a short story unto itself. It tells the story of a werewolf haunting a small town as the moon turns full once every month. It was published as a limited-edition hardcover in 1983 by Land of Enchantment, and in 1985 as a mass-market trade paperback by Signet. King also wrote the screenplay for its film adaptation, Silver Bullet (1985). It is King's shortest novel to date at 127 pages, which makes it technically a novella.