Murder or justice? When a local sex offender Albie Woodville is killed, it puts DI Harry Powell and DC Hazel Hamilton at the East Rise incident room under immense pressure. They must treat this case the same as any other murder, but they know better than anyone, the bad things Albie did when he was alive... But as the investigation progresses, it becomes clear this isn't just a one-off killing - someone is out for revenge... Will the team solve the case in time to stop more blood from being shed? Mercy Killing is a gripping crime thriller from a real police detective.