The Boondock Saints is a 1999 American vigilante 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 (David Della Rocco), set out to rid their home city of Boston, Massachusetts of crime and evil, all the 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 and was met with poor critical reviews; but the film has grossed about $50 million in domestic video sales and ultimately developed a large cult following.