Troubled by the clues he's gathered about his origins, David is determined to stay in Mouthe. Especially since a new crime scene replicating a famous painting has been discovered… But Sergeant Louvetot, deaf to his hunches, orders him to stop interfering with the investigation. David finds a better ally in Nicki, the singer at the bar Les Flocons, who is immediately charmed by his whimsical nature. Their suspicions fall on the village librarian, a young man with obsessive tendencies and a passion for art history. The killer strikes again.
