When the Paris police's vice squad - on the orders of Police Chief Lépine - begin to clean prostitutes off the city's streets, a man's body is found in the Bois de Boulogne. Inspector Antoine Jouin is entrusted with the investigation.

Yvan De Wiel, a private banker from Geneva, goes to Argentina in the midst of a dictatorship to replace his partner, the object of the most worrying rumours, who disappeared overnight.

París, Francia, 1899. El cuerpo de una mujer desconocida es encontrado en el río Sena. La investigación llevará a un joven y ambicioso inspector a descubrir un pesado secreto de Estado.