Judge Carole Massard is found dead in her office as she prepares to deliver her verdict in a criminal trial. Subsequently, the investigators go on the trail of a possible revenge by the accused. Meanwhile, Morgane is depressed: weeks have passed since Ludo left her; furthermore, she has discovered that Roxane, her worst enemy--and Karadec's new girlfriend--is increasingly playing a leading role in the life of the brigade. Nothing is going well for the consultant who must face an investigation that is much more complex than it seemed at first.