Monsieur le Commissaire and the Dead Lovers. On the island of Saint-Marcouf, a couple in love is brutally murdered. Someone has slit their throats. Just a week later, another dead couple is found in a holiday home. At both crime scenes, the killer has left a message written in the victims' blood. When a hunter stumbles upon two skeletal corpses in the woods, Philippe Lagarde finds himself in a race against time, and he must ask himself: Is he hunting a serial killer?.