During the reign of King Louis X the Hutin, his wife Marguerite indulged in parties of pleasure in the secrecy of the Tour de Nesle. Her young lovers were also her victims, and she had them murdered to avoid detection. Such was the fate that awaited Philippe d'Aulnay, who had barely arrived in Paris and who, in one night, had gone from the arms of the sovereign to the bottom of the Seine. What the queen doesn't know is that among his companions in debauchery that night was a certain Buridan. An ...