No, American Psycho is not a true story. It is a work of fiction written by Bret Easton Ellis. The novel, published in 1991, follows the life of Patrick Bateman, a wealthy New York City investment banker who leads a double life as a serial killer. The story is a satirical critique of the excesses and superficiality of the 1980s yuppie culture. While the characters and events are entirely fictional, the novel’s vivid and often disturbing portrayal of violence and materialism has sparked much discussion and controversy. The book was later adapted into a film in 2000, starring Christian Bale as Patrick Bateman.