This document provides a summary of the psychological thriller film Fight Club, directed by David Fincher. It discusses the main characters played by Edward Norton, Brad Pitt and Helena Bonham Carter. The plot involves an unnamed narrator who suffers from insomnia and generalized anxiety disorder and finds relief in support groups until he meets Marla Singer. He later meets Tyler Durden and they start an underground fighting club that grows increasingly destructive. The document outlines several psychological disorders portrayed in the film like insomnia, borderline personality disorder, paranoid psychosis and dissociative identity disorder. It provides analysis of how the narrator's psychological issues led to wider societal impacts and discusses treatments like psychotherapy and medication.