The sequel starts with Patrick Bateman being murdered by a little girl his latest victim was babysitting. This is all narrated by the now-grown girl with the chirpy enthusiasm of a softcore porn voiceover. In the present, the girl is a criminology student played by Mila Kunis (this was back when she was most famous for yelling "KELSO!" in a high-pitched voice). She wants a coveted spot in the FBI, so she starts killing off her classmates and sleeping with her sexually irresistible professor, portrayed by 71-year-old William Shatner.
Eventually, Psycho Girl is found out and dies in a car explosion ... but not really, because the final scene reveals she's somehow still alive and working for the FBI. Equally baffling is the fact that Kunis still had a career after this movie. When asked about it later on, Kunis stated, "I didn't know it would be American Psycho II. It was supposed to be a different project, and it was re-edited, but, ooh ... I don't know. Bad." They should have put that on the poster.
Meanwhile, a very embarrassed Ellis said the studio had the genius idea of turning American Psycho into a franchise, featuring American Psycho In L.A., American Psycho In Las Vegas, American Psycho: Hawaiian Wedding, etc. So if there's one upside, it's that this movie stopped the studio from going all CSI on the book.