Alpha Dog is a 2006 American crime drama film written and directed by Nick Cassavetes. It is based on the true story of the kidnapping and murder of Nicholas Markowitz in 2000. The film features an ensemble cast that includes Ben Foster, Shawn Hatosy, Emile Hirsch, Christopher Marquette, Sharon Stone, Justin Timberlake, Anton Yelchin, and Bruce Willis.

Nicholas David Rowland Cassavetes is an American actor, director, and writer. He has directed such films as She's So Lovely (1997), John Q. (2002), The Notebook (2004), Alpha Dog (2006), and My Sister's Keeper (2009). His acting credits include an uncredited role in Husbands (1970)—which was directed by his father, John Cassavetes—as well as roles in the films The Wraith (1986), Face/Off (1997), and Blow (2001).