Teen Wolf is a 1985 American fantasy comedy film directed by Rod Daniel and written by Jeph Loeb and Matthew Weisman. The film stars Michael J. Fox as a high school student who discovers that his family has an unusual pedigree when he finds himself transforming into a werewolf.
Teen Wolf was one of the first scripts written by Jeph Loeb. Loeb was hired to write it because the studio, after the surprising success of the film Valley Girl, wanted to make a comedy that would cost almost nothing (the production costs amounted to about $1 million) and take very little time to film. The project came together when Michael J. Fox accepted the lead role and his Family Ties co-star Meredith Baxter-Birney became pregnant, which created a delay in the show's filming that allowed Fox time to complete filming and then return to his TV show.