The Boondock Saints is a 1999 American vigilante action film written and directed by Troy Duffy. The film stars Sean Patrick Flanery and Norman Reedus as fraternal twins, Connor and Murphy MacManus, who become vigilantes after killing two members of the Russian Mafia in self-defense. After both experience an epiphany, the brothers, together with their friend "Funny Man" (David Della Rocco), set out to rid their home city of Boston, Massachusetts of crime and evil, all while being pursued by FBI Agent Paul Smecker (Willem Dafoe).
Duffy indicates that the screenplay was inspired by personal experience, while living in Los Angeles. Initially regarded as one of the hottest scripts in Hollywood, the movie had a troubled production and was finally given a limited theatrical release of only five theaters for one week due to the Columbine High School massacre. It was met with poor critical reviews; however, the film ultimately grossed about $50 million in domestic video sales and developed a large cult following. The movie was followed by a 2009 sequel, The Boondock Saints II: All Saints Day, and a third film is currently in development.