Paris, 1755. Young girls are found dead and bloodless. Louis XV demands that an investigation be carried out, but in all discretion.
The king’s favorite, the Marquise de Pompadour, therefore entrusts the matter to her valet and confidant, Florimond.
The investigations of this familiar of the court will lead him to suspect the count of Charolais, cousin of Louis XV. A track that the Pompadour refuses to consider: we are not attacking a prince of the blood!
But Florimond is not ready to give up: his younger sister has not been found for many years, and he comes to wonder if her disappearance would not also be a misdeed of the sinister Count Charolais.
From the Palace of Versailles to the streets of Paris via the Parc-aux-Cerfs, where Louis XV “raised” young girls for his personal “consumption”, the Pompadour and her valet take us to the nooks and crannies of the courtyard. and along the twists and turns of the sadistic mind of a serial killer.