Mel and Roy are called to the house of notorious drug dealers the Caffreys after an assault is committed there and it soon becomes clear that there is a split in the family. At the scene of a burglary of the home of a young woman, John is confronted by Kieron Caffrey, the woman's boyfriend, who tells him that he can leave and forget about it. While driving Maggie Hayes to a meeting, Sergeant Giffin suddenly stops the car and handcuffs and arrests a criminal he is familiar with.When a gun is found in his car Giffin is vindicated, but Maggie is angry with him, claiming he has endangered her safety. Giffin and Wakefield join forces to get Kieron Caffrey to spill the beans about his father's drug dealing activities.