![Paris Police 1905](https://image.chilimovie.com/region2/en/300px/20221214/6EPIQ9DpGEkS9ML2Jn9Ap8UmxSP.jpg)
Guichard falls into the trap when he is lured to Château de Bagatelle by a phone call from Fiersi's son, Julien. And Commissioner Lépine confronts Fondari, the head of the vice squad.
Marguerite discovers that Adolphe has syphilis, Jouin identifies the body in the Bois de Boulogne, and Cochefert reveals that the dead man is linked to an unsolved murder.