When the body of a young girl is found dumped on the banks of the Thames, even the police are shocked by the brutality of her murder: horrifically mutilated, severed in half, and drained of blood, her corpse is an obvious mirror image of the famous Black Dahlia murder in 1940s Los Angeles. Now Detective Inspector Anna Travis must race against time to catch this copycat killer. She turns to her mentor, the brilliant and volatile Detective Chief Inspector James Langton, but the frictions of their romantic relationship are complicating the case. And then a second girl is found...