"Boondock Saints" is a 1999 action film directed by Troy Duffy. The story follows two Irish-American brothers, Connor and Murphy MacManus, who take it upon themselves to rid Boston of criminals. They believe they are on a divine mission, leading to a series of vigilante killings that attract the attention of law enforcement. The film features a notable performance by Willem Dafoe as an FBI agent investigating the brothers. Despite its initial limited release, "Boondock Saints" gained a cult following over the years, becoming known for its themes of justice and morality, as well as its stylized violence.