BBC crime drama starring Hugo Speer and Sharon Small as an elite murder squad. London is the backdrop for an elite murder squad, comprised of Detective Inspector David Bradford; ambitious Detective Sergeant Vivienne Cole, who plays by her own rules; seasoned crime-solver Detective Constable Rob Brady; and inexperienced Trainee Detective Constable Billie Fitzgerald. This series sees the detectives tackling a brand new murder case in each episode, but it’s the one mystery David can’t solve that continues to haunt him. In a dramatic plot twist, detectives will begin to think the unthinkable: did the Detective Inspector murder his wife?