A young woman is found dead in Perpignan. A link emerges with a past disappearance.

Flore is assaulted within her team, while the investigation into Palomyno intensifies.

A new disappearance disrupts the investigation while Palomyno, the main suspect, is in prison.

Year 2000. The arrival of a profiler complicates an investigation that has already stalled.

As the team discovers another body, the perpetrator's confession complicates the investigation.

Flore confronts the perpetrator, who confesses to two of the murders after 16 years on the run.