The Boondock Saints is about Connor MacManus, played by Sean Patrick Flanery, and his brother Murphy who is played by Norman Reedus. The brothers killed a couple members of the mafia and realize that they must turn themselves in so they do. But instead of punishment they are released as heroes and suddenly they believe that it is their divine duty, given to them by God himself, to rid the world of the mafia and other gangsters like the mafia. They live in a very simple, and crude, apartment in Boston and set out on their quest to rid the world of evil once and for all. As the gangster bodies start to pile up the FBI gets involved and sends in agent Paul Smecker, played by Willem Defoe, to try and solve the murders. Smecker is a flamboyantly gay man and the movie spends probably more time than it should establishing this character trait. But the closer Smecker gets to solving the murders and moving in on the MacManus boys the more he begins to realize what they are doing. Smecker decides that he agrees with the brothers on what they are doing and thinks they are doing the right thing. The movie moves quickly to a surprising end from there.
Director Troy Duffy named the script for this movie after his band and the first draft of the script was called The Brood. But when The Boondock Saints was adapted as the movie title Duffy changed the name of his band to The Boondock Saints. All of the underground band hype in the world could not save The Boondock Saints from box office failure but it still lives on video rental and if you ever get a chance you should set aside some time to watch The Boondock Saints. It is something you will probably never forget for quite a while.