American Psycho is a satirical psychological horror film directed by Mary Harron. The movie is based on the novel of the same name by Bret Easton Ellis and follows the story of Patrick Bateman, a wealthy investment banker and serial killer. American Psycho satirizes the materialistic and narcissistic culture of the 1980s, exposing the dark underbelly of the yuppie lifestyle. The film's blend of horror and satire creates a chilling and thought-provoking cinematic experience.