From one of Britain's blockbuster novelists —also exploding in Canadian popularity—comes a shattering psychological thriller featuring the heroes of The Last Temptation and The Wire in the Blood. Facing the toughest challenge of their careers, Dr. Tony Hill and Detective Chief Inspector Carol Jordan confront a series of "impossible" murders. Evidence suggests that this is not a copycat killing, but something much stranger. Now Tony and Carol are facing one of the most perverse killers they have ever encountered.