The Boondock Saints is a 1999 American vigilante action thriller film written and directed by Troy Duffy in his feature directorial debut. Starring Willem Dafoe, Sean Patrick Flanery, Norman Reedus, David Della Rocco, and Billy Connolly, the film follows Irish fraternal twin brothers Connor and Murphy MacManus (Flanery and Reedus), who become vigilantes after killing two members of the Russian mafia in self defense. After both experience an epiphany, the twins, together with their best friend "Funny Man" Rocco (Rocco), set out on a mission to rid Boston of the criminal underworld in the name of God, all the while being pursued by FBI Special Agent Paul Smecker (Dafoe).

Plot

In Boston, Irish American fraternal twin brothers Connor and Murphy MacManus attend Mass, where the priest mentions the fate of Kitty Genovese. Later, while Connor and Murphy are celebrating Saint Patrick's Day with friends, three Russian mobsters arrive and try to shut down the pub so they can demolish it for the valuable land underneath. Despite Connor and Murphy's attempt to talk them down, a brawl ensues, in which the Russians are defeated and humiliated. The next morning, when two of the Russians seek revenge, the brothers beat them to death in self-defense.