Several deaths occur some of which could pass for suicides. But, almost each of corpses, appears a drawing, a mysterious sign in which investigators eventually see the dune guillotine symbolized drawing. This is to nen no doubt the signing of the killer and, consequently, that of a serial killer. Two of the victims were involved, ten years ago, a dramatic excursion on an island off lIslande. Will there a connection between these murders and this trip? And here quun killings led investigators to sintéresser a curious association that brings back the day, in a dramatized form, revolutionary congregation meetings in which sit in somewhat dated costumes, Robespierre, Danton, Desmoulins, Couthon and other figures of the French Revolution. There is quun step to establish a link between this association and the curious sign meant to represent a guillotine. Which of these two tracks is right? Will there a relationship between the two? And, if so, which? This is from this situation perfectly improbable departure quAdamsberg and his team will conduct their investigations. As in most of the novels of Vargas, the player is placed in front entrance set an inextricable situation, unlikely that, in the specific dAdamsberg terms like "a ball seaweed." Equal to himself, lunar, unpredictable, fetish commissioner Vargas will confuse his entourage as to provoke disorder in his team and cause a near rebellion. At his side, there is Danglard Veyrenc and Retancourt in the registry where they excelled in previous Vargas works. Fans of Vargas find the mood and relationships that have the charm of this motley crew, but whose individual benefits and the number densemble work wonderfully. Digressions into digressions, of course change in course changes, navigating between lIslande and the French Revolution, Adamsberg eventually mystify his whole world and remain the boss, after dune thrilling investigation that must wait to know the final pages outcome. One small regret: the absence of the family who would Vandoosler spiced a little everything. But let's not difficult. After four years of scarcity, that a successful Vargas to be savored with pleasure. The aficionados will not be disappointed.