Insomnia

'Insomnia' is a 2002 psychological thriller film directed by Christopher Nolan. It follows a Los Angeles homicide detective who is sent to a small Alaskan town to investigate the murder of a teenage girl. However, during the investigation, he struggles with a lack of sleep due to the region's perpetual daylight, which starts to take a toll on his mental health. As the detective becomes increasingly unhinged, his moral boundaries are tested. Al Pacino, Robin Williams, and Hilary Swank star in the film.