In Boston, Lt. Jimmy Dove is a veteran member of the police force's bomb squad, on the verge of retirement and helping to train newer recruits. Dove hides that he is really Liam McGivney, a former member of a Northern Ireland terrorist cell. He had been friends with Gaerity, but when Gaerity tried to set off a bomb that would have killed numerous civilians, he interceded, ending in the death of his girlfriend, who was also Gaerity's sister, and leading to Gaerity's imprisonment. Devastated, McGivney had moved to Boston and taken on a new identity, hoping to find atonement in saving others by defusing bombs. Only Dove's uncle Max O'Bannon is aware of his past and expresses his desire for Dove to retire early, having clearly shown his atonement.