A car accident in California, a deadly assault in Provence and two boys thirty years apart left struggling for their lives. The stage is set for one of the most electrifying and intriguing thrillers of all time. Dominic Fornier is the detective who finds himself at the heart of the investigation. A simple provincial case that becomes one of the largest and most important in criminal history; the case of a lifetime, but one that seems impossible to win. Fornier's only hope is to try to prove a link between the two boys... the final missing key that will expose the killer. A chilling journey through forensic, medical and psychiatric evidence between France, America and London; a breathless paperchase of clues extracted from a young boy's psyche; revenge, blackmail and political corruption behind a trial that captures a nation... and a desperate race against time to catch a murderer who will stop at nothing to cover his tracks.