Hors Saison - Season 1

It's the end of the season, the vacationers are leaving, the snow is melting - and the corpse of a murdered woman is revealed in an intriguing and macabre scene. The Swiss captain Sterenn Peiry is in charge of the case, soon supported by the French investigator Lyes Bouaouni who reveals to her that a body was found in a similar state on the other side of the border. As the mystery deepens, the investigator discovers that her son accidentally killed his girlfriend in the car. Her life changes: how far will she go to protect her son?

Sterenn decides to cover up the manslaughter of his son by drawing inspiration from the modus operandi of the killer who rages in the region. At the same time, she is continuing her investigation in collaboration with Lyes Bouaouni, from the Lyon PJ.

The noose is tightening around Sterenn's secret. Main suspect, Jérémy is summoned by the police and Lyes makes him undergo an interrogation. Dismissed from the investigation temporarily, Sterenn nevertheless discovers the link between the killer's victims and Jérémy is finally cleared. Until when?

Matteo, Jeremy's boss, has just been kidnapped by the killer. A race against time begins to save him. Faced with the killer, Sterenn tries to convince him to spare Matteo... in vain. Arrested, the killer refuses to speak. Except on Sterenn, on whom he imposes a diabolical pact...

Sterenn only has a few hours left to honor her pact with the killer if she wants to save her son. As for Lyes, he is convinced that Mélinda is not a victim of the killer and has more and more suspicions about Jérémy. Sterenn then radically changes strategy and confronts the killer.

While the pact with the killer is still running, Lyes manages to convince the Valais police that Sterenn is covering up for her son and the homicide he committed. Sterenn and Jeremy are arrested. But Sterenn manages to escape...