Berthaud investigates the mutilated body of a young woman found on a train track.

Judge Roban's investigation into possible corruption makes waves in high places.

With the second body identified, Berthaud suspects the work of a serial killer.

Police struggle to hold onto their suspect after he is hospitalized.

Police manage to get the suspect remanded in custody, but revelations threaten their case.

With the main suspect due to be released, Laure Berthaud's team is back to square one.

In spite of the evidence, Laure Berthaud believes that the killer remains at large.

With new evidence to back Laure Berthaud's theories, Roban asks the crime squad to be involved again.

Police concentrate their efforts on putting Niko's prostitution ring under surveillance.

Police tighten their surveillance operation, while the "Butcher" prepares to strike again.

Police strive to connect the elusive leader of Niko's prostitution ring and the infamous "Butcher."

Police close in on Niko's prostitution ring, but can Laure track the "Butcher" down?