When DCI Duncan Bone is contacted by a terminally-ill psychiatric patient and given clues linking a forty-year-old unsolved murder to high-profile public figures, he finds himself locked into a conspiracy at the very heart of the Scottish criminal and political establishment. With his bosses stonewalling the investigation, lives under threat, and his career on the line. Bone faces a race against time to hunt down a group of men who will stop at nothing to cover their murderous crime. Can DCI Bone catch the killer before the killing starts again?