William Monahan is an American novelist, screenwriter and former journalist. Monahan went to work in Hollywood in 1998, when Warner Bros. bought the film rights to Light House: A Trifle, which had not yet been published, and contracted him to adapt it to the screen for director Gore Verbinski. In 2001, 20th Century Fox bought Monahan's spec script about the Barbary Wars called Tripoli, with Ridley Scott, who was to become Monahan's primary collaborator, attached to direct. Monahan, immediately successful as a screenwriter, has since worked with Martin Scorsese and Steven Spielberg, among other filmmakers. His first produced screenplay, Kingdom of Heaven was made into a film by Ridley Scott and released in theaters in 2005. His second produced screenplay was The Departed, a film which earned him a WGA award and an Academy Award for Best Adapted Screenplay. Monahan prefers that screenplays be written by one writer rather than a collaboration of multiple screenwriters writing competing drafts. Thus far he has followed his scripts through production, and is one of very few sole credit writers in the film business.