Publisher's Synopsis
In Boston, two Irish American twin brothers, Connor and Murphy MacManus, attend Mass, where the priest mentions the fate of Kitty Genovese. Later, when Connor and Murphy are celebrating St. Patrick's Day with friends, three Russian mobsters arrive and announce they want to close the pub and take over the land it is built on. A brawl ensues, in which the Russians are defeated and humiliated. The next morning, when two of the Russians seek revenge on Connor and Murphy, the mobsters are killed in self-defense.
FBI Agent Paul Smecker is assigned to the case, and finds that the police and local news reporters see the MacManus brothers as heroes. The duo turn themselves in at a police station, where Smecker interviews them. After they retell their incident to Smecker, he declines to press charges and allows them to spend the night in a holding cell to avoid attention from the media. That night, they receive a "calling" from God telling them to hunt down wicked men so that the innocent will flourish.
Connor and Murphy resolve to rid Boston of evil men. Connor learns of a meeting of Russian syndicate bosses at a hotel. Having equipped themselves with weaponry from a local underground gun dealer, the brothers quickly kill all nine Russian mobsters, while Rocco, a friend of the brothers and errand boy for local mafia boss Giuseppe "Papa Joe" Yakavetta, is sent on a hit as an unknowing pawn. The next day, Rocco learns that he was betrayed, having been sent to kill nine Russians with only a six-shot revolver. Rocco commits himself to helping Connor and Murphy. That night, they hunt down and kill Vincenzo Lapazzi, an underboss of the Yakavetta crime family.