Party Monster is a 2003 American factually based biographical drama film directed by Fenton Bailey and Randy Barbato, and starring Macaulay Culkin as the drug-addled "king of the Club Kids". The film tells the story of rise and fall of the infamous New York City party promoter Michael Alig. This was Macaulay Culkin's first film in nearly nine years since his starring role in the 1994 film Richie Rich.
The film is based on Disco Bloodbath, the memoir of James St. James which details his friendship with Alig, that later fell apart as Alig's drug addiction worsened, and ended after he murdered Angel Melendez and went to prison. A 1998 documentary on the murder, also called Party Monster: The Shockumentary, was used for certain elements of the film.