Season 5 begins with the shocking double murder of a woman and a girl that plunges our characters into the world of organized crime, narcs and gangs. Captain Laure Berthaud, facing a personal crisis, pursues as her primary suspect a man who is the husband and father of the victims. She also investigates an ATM-robbing gang who could somehow be involved with the murders. Pierre Clement, still in a relationship with Joséphine Karlsson, continues to climb the career ladder as a private lawyer with a growing reputation in the legal community. Meanwhile, eager to expose police manipulation in the death of an officer, Judge Roban and Joséphine Karlsson find themselves working together. The brutal investigations that link them all reveal unexpected connections between some and irrevocable breaks between others. The only certainty: no one will emerge from the ordeal unscathed.