On the Atlantic coast, bales of pure cocaine were found at low tide several days ago. That morning, the body of Lucas Lagne, captain and son of a family that owned a shipyard in the region, was found. Sarah, a gendarmerie captain, is in charge of the investigation and will have to team up with Ben, from the narcotics squad, who has just been called in as backup by the prosecutor. The surprise of meeting face to face is great. 19 years ago, they lived in the same city, where Sarah fled when she was pregnant...
Camille Fauvel, a former medical examiner and now crime novel writer has returned to Granville and she preparing a new novel. In the morning she was jogging on the beach and discovered the corpse of a man who has been tortured.The police captain Damien Bonaventure and the district attorney arrive at the beach where they meet Camille Fauvel.She explains them that the man has been tortured according to an old Viking ritual.Camille proposes to do the autopsy of the corpse and the district attorney agrees with this idea.