DSI Stella Gibson continues to hunt serial killer Paul Spector in the second series of this smart psychological thriller. As Gibson tries to help Spector's surviving victim remember the identity of her attacker, Spector deals with loose ends that he left behind in Belfast. When he realizes that someone from his past has been helping the police with their inquires, Spector changes his plans with terrifying consequences.

What begins as a chance romance between two people from opposite walks of life - one an antisocial investment banker, the other a slacker romantic - quickly unravels when the reclusive banker disappears under suspicious circumstances, exposing his real identity as a spy and forcing his lover down a dark path to reveal the truth.