Matthew Goode and MyAnna Buring star in this two-part ITV drama adapted from the novel by Erin Kelly. Having been released from prison early after serving time for murder, Rex (Goode) is welcomed home by his girlfriend Karen (Buring) and their young daughter. Their dark past is gradually pieced together in flashbacks which show how Karen was first beguiled by Rex and his eccentric sister Biba (Ophelia Lovibond) and how the close bond between the three eventually led to murder.