Marie Lemaire is poisoned during a dinner that brings together an association of merchants. She is the heiress of her recently deceased husband, François, who was the owner of the largest glass factory in the city. All the guests are potential suspects and the investigators must sort out the real from the fake, detect motives and verify alibis. Olivia Rousseau, one of the guests, ex-mistress of François Lemaire who left her to marry Marie, is dead at her home. In a letter, she declared that she had poisoned Marie and killed herself in the same way.

He can deliver a breathtaking speech on the American soul to flabbergasted schoolboys, get mixed up in the private lives of his citizens, and even get his 18-year-old daughter to swear that never, but never, would she leave home. Meet Simon Wolberg, mayor of a small provincial city, madly in love with his wife, an interfering father and provocative son. This man is driven by an obsession with his family. Which leads him to test the force and fragility of these bonds.

Summer 79, holidays, Ocean. Jean, about 10 years old, realizes that his mother and father don't love each other anymore. Suddenly, the family is confronted with death. Jean discovers the ambivalence of life, its violence, human weakness, something like the end of childhood...

Philippe Villers, coroner, found his wife shot once in the head on his way home one evening. After investigation, Detective Judith Lebrun, define Villers as responsible for the murder.

Franck and Simon are both good cops. They work as partners. But their lives take a tailspin when Simon, driving drunk, causes a tragic car wreck. A few years later, out of the police, he is forced to take matters into his own hands when his family is in danger.

Parisian businesswoman Lili travels to rural France for a wedding and falls in love with Luc, a single father and farmer.

During the celebration of her Champagne house's centenary, Mrs. Dupaquier is murdered in her own cellars. The investigation is entrusted to the energetic Captain Sofia Guerini and the more reserved Gendarme Mathieu Delorme, a duo who have grown fond of each other after working together on several cases. Faced with the maze of tunnels connecting the cellars and the mysterious inscription left by the murderer, they must call on Bastien Keller, a geologist who specializes in the region. For the purposes of the investigation, Keller is exceptionally released from prison, where he is being held for violating his probation—he is under investigation for endangering his employees during underground work. One of the victims is still in a coma: Lucie, Sofia's fiancée. As a motive for revenge emerges, Sofia and Keller must put aside their differences to prevent further murders.