William J. Monahan (born November 3, 1960) is an American screenwriter, movie director and author. He wrote the satirical novel "" (2000). He then went on to write screenplays. Some of his these include "Kingdom of Heaven" (2005), "The Departed" (2005), "Body of Lies" (2008), "Edge of Darkness" (2010) and "The Gambler" (2014). "The Departed" won him a Writers Guild of America Award and Academy Award for Best Adapted Screenplay. He also wrote and directed "London Boulevard" (2010) and "Mojave" (2015). He has also written for magazine "Maxim".