American Psycho is a psychological thriller film based on the novel of the same name by Bret Easton Ellis. Christian Bale delivers a chilling performance as Patrick Bateman, a wealthy investment banker who leads a double life as a serial killer. The film explores themes of materialism, identity, and the dark side of the American Dream. Bale's portrayal of Bateman is both charismatic and terrifying, making American Psycho a must-watch for fans of psychological thrillers.