The Chasebridge Killer is out; racial tension is rising and the mutilated body of a young Muslim man is found in the stairwell of a tower block in Doncaster. As he gets drawn into the case, Sean Denton's family life and his police job become dangerously entwined. Meanwhile a young woman is trying to piece her life back together, but someone is out there; someone who will never let her forget what she's done.