Claire Longval is found dead in her home, violently beaten on the head in her sleep, the scene looks like a robbery and her bag is missing; Antoine returns to his job as commissioner still with partial amnesia.
Candice and Antoine await the verdict of the team that has finally discovered that he does not remember the commander while investigating the suicide of a victim of a nightclub fire, Ismael joins the team from Marseille.
A man who had been a paraplegic for seven years following a car accident is found dead in his bed. The bite mark on his legs makes his death much more suspicious. Ismael complains to the union about Candice's methods.
The body of a young man in his 20s is found in a quarry, with strangulation marks around his neck, but what is really interesting to Candice are his particular injuries to his face. The team must investigate within the world of immigration.
Axel, addicted to video games, is found dead in his room. Although Candice is instantly aware of how audible the floor noise is in this room, the victim's mother, originally present, was unaware.
Candice and the team head to the High School of Aeronautics facility, where the body of a school instructor, Anne Rossignol, has been discovered this morning in the cockpit of a scale model Boeing 747 used to train future flight attendants.
