Laure's team manages to track down Stéphane Jaulin, whose lawyer turns out to be Pierre Clément. Clément takes to Jaulin's defence and clashes with Judge Roban, who sees his client as the perfect fit for the crime.
Meanwhile, the police investigation widens to include other possible suspects. Joséphine Karlsson succeeds in getting back on the case which had been stolen from under her nose. She forms an alliance with Roban, who is intent on exposing what appears to be a case of police manipulation. All the while, Laure is trying to deal with her 'problem'.