Munch, a lawyer, must assist a teenager accused of murdering one of his friends. This rebellious boy, who prefers to defy his judges rather than reveal his secret, seems perfectly oblivious to the danger that awaits him. Because this crime hides another, just as frightening. Munch tries to gain his trust, so that he agrees to reveal what he knows about his friend's death. But the boy is withdrawn. How to find a way to establish dialogue with him, in order to best defend him and avoid a tragic fate?...

Munch is tasked with defending a man accused of raping his wife. However, the defendant seems to be a victim in this case, because his wife is violent towards him. Munch turns the accusation around and appears poised to win the case. But when his client is found next to the bloodied corpse of his wife, justice is racing...

Munch is faced with a real headache: his client, a handsome young man in his thirties, confesses to the horrible crime of his girlfriend, without understanding what prompted him to do it, why he killed her.

A transsexual woman is arrested for the murder of one of her collaborators in the hospital she runs. Munch will gradually unravel the web of a case and face cruel prejudices.

A bloodied woman arrives at the office... she holds Munch's business card tightly in her hand. She has no papers or memories of the last hours of her life. Munch discovers that it is Marie Louvier is a cabaret dancer accused of murdering her boss, Etienne Kieffer, a notorious sexual predator. Munch manages to get Marie released in self-defense. But while the lawyer believes the case settled, investigators discover that Marie Louvier has impersonated another.

Munch sees 14-year-old Lisbeth Boisselier arrive in his office, asking for his help to open the retrial of his mother, Claire. She had been convicted of murder four years earlier, but Lisbeth did not believe in her guilt. The proof, she found the murder weapon ... And the prints on the gun are not those of his mother! The lawyer quickly understands that the real murderer took advantage of the lack of communication within this Boisselier family to escape justice. Meanwhile, Montjoie's trap is tightening.

Fight in the cabinet: Clarisse has disappeared. The young woman is wanted by the police for kidnapping her son. Munch, Aurélien and Gaspard manage to find her, and discover that she is accused of the murder of her mother-in-law. One thing leading to another, they will trace the thread of a Machiavellian crime for which Clarisse is unjustly implicated, as part of a dark story of revenge.

Munch defends Paul Kentz, a brilliant businessman and philanthropist of the Net Economy, accused of murdering his wife. All the facts converge to point out him guilty except for the sincere love he had for his wife and which makes the crime incomprehensible. During the trial at the assizes, Munch will have to use all his virtuosity to turn the jury in favor of this client whose intelligence is matched only by strangeness.