Insomnia is a 2002 American neo-noir psychological thriller film directed by Christopher Nolan from a screenplay by Hillary Seitz. It is a remake of the 1997 Norwegian film of the same name. The film stars Al Pacino, Robin Williams, and Hilary Swank, with Maura Tierney, Martin Donovan, Nicky Katt, and Paul Dooley in supporting roles. It follows two Los Angeles homicide detectives investigating a murder in Nightmute, Alaska.