The double murder of a young man and woman with a message in blood at both scenes reawakens the memory of an identical case fifteen years earlier. Detective Superintendent Eddie Kilminster, a junior detective in the earlier case w leads the current investigation. He enlists the help of Sean Moses, an ex colleague, and w an investigative profiler operating outside of the force. Eddie and Sean find themselves on a journey and a race against time before the killer strikes again. Will Eddies mind be opened to the forces of nature that lie beneath these killings, and will Sean discover a new path in life before events push him beyond the edge of his own sanity.