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. It follows the story of a wealthy investment banker who leads a double life as a serial killer. American Psycho satirizes the materialistic and shallow culture of 1980s Wall Street. The film offers a dark and disturbing commentary on consumerism, narcissism, and the dehumanizing effects of capitalism.