Erick Chabot

Mathilde, a young dancer with a promising career ahead of her, receives a letter from a "chain letter" as she is about to leave on a tour. On the way she reads to her friend Sophie all the disasters that supposedly should befall those who break the chain by not sending someone else the letter. Mathilde finds this funny and isn't worried at all. But on the first stop of her tour, the young dancer falls victim to a series of strange accidents.

Molinat is assigned to the case of a man found with a bullet in his ear on the shore of a little Atlantic coast resort he knows well. Indeed, he used to live there before his wife disappeared at sea, never to be found again. As the ocean rejects a new corpse everyday, the mystery thickens and the list of potential suspects grows longer. This slows Molinat's progress as much as the cumbersome Leroyer, sent in to spy on him and hopefully impede his progress. The tension mounts and the ring involving the three young ladies in the grey mansion, the village idiot and the real estate agent starts spinning out of control.

Captain Stéphane Delage, head of the Juvenile Brigade, witnesses the death of a close friend and fellow officer, who is replaced by Laurence Dorlaville. On her very first day, Delage learns that Simon, the 13-year-old son of his late colleague, has attempted suicide. Even more disturbing, the gun Simon used is identified as the same weapon used to shoot a security guard at a shopping mall. While Dorlaville investigates the case of a child who has been the victim of incest, Delage uncovers the shocking truth: Simon is part of a gang of teenagers completely controlled by an adult who terrorizes and ruthlessly exploits them.