Apt Pupil is a 1998 American psychological thriller film directed and co-produced by Bryan Singer and written by Brandon Boyce. The film, which stars Ian McKellen and Brad Renfro, is based on the 1982 novella of the same name by Stephen King. Set in the 1980s in southern California, the film tells the fictional story of high school student Todd Bowden (Renfro), who discovers a fugitive Nazi war criminal, Kurt Dussander (McKellen), living in his neighborhood under a pseudonym. Bowden, obsessed with Nazism and the Holocaust, persuades Dussander to share his stories, and their relationship stirs malice in each of them. Singer has called Apt Pupil "a study in cruelty", with Nazism serving as a vehicle to demonstrate the capacity of evil.
The film was released in the United States and Canada in October 1998 to mixed reviews and made under $9 million. The main actors won several minor awards for their performances.