David Harvey is arrested, but while he is in custody, two more identical killings occur, casting doubt on his guilt. Jimmy Beck, meanwhile, cannot get over his guilt over Bilborough's death and raping Penhaligon.
Maggie Harvey, David's wife, is discovered to be the second killer, but her confession to the first murder means David will be set free. Jimmy Beck finally reaches his breaking point and sets out to punish David otherwise.
Nash and Grady cross paths with Nash's former foster parents, which triggers Nash's long-harbored vendetta towards them, particularly their little boy. Still coping with Jimmy Beck's death, the police bring Fitz in to help catch Nash.