Answer
Silver Bullet is a 1985 American supernatural horror film directed by Daniel Attias, written by Stephen King, and starring Gary Busey, Everett McGill, Corey Haim, and Megan Follows. The film is based on King's 1983 novella Cycle of the Werewolf. It follows a young boy who discovers that his town is being terrorized by a werewolf, and that his father may be the creature.