Jurassic Park III is a 2001 American science fiction adventure film and the third installment in the Jurassic Park film series. The film stars Sam Neill, William H. Macy, Téa Leoni, Alessandro Nivola, Trevor Morgan, and Michael Jeter. It is the first film in the series Steven Spielberg did not direct; neither was it based on a book by Michael Crichton, although numerous scenes in the film were taken from Crichton's novels Jurassic Park and The Lost World. Events depicted in the film take place on Isla Sorna, an island off Central America's Pacific coast, where a divorced couple have tricked Dr. Alan Grant into helping them find their son. The film features the Spinosaurus, replacing the Tyrannosaurus Rex as the main antagonist.