While he's suspended, Rocher witnesses the death of a colleague, but he still investigates the case with a mysterious woman, Elisa Bergman.
As the team gets a new murder case, Elisa joins the squad despite Rocher's doubts about her.
A young woman is found dead with her mouth stapled shut; Elisa ponders the symbolism and wonders whether the victim held a secret that someone wanted to keep hidden.
When a young boy goes missing in the woods, the department is on high alert; separated from the others, Elisa witnesses strange phenomena in the area.
Elisa's life is disrupted when the father of her daughter shows up; the team struggles to solve a murder with no leads.
Elisa crosses a line; Hyppolite makes a discovery; Rocher and Elisa race against time to prevent the killer from getting to his next target.
Odile Vuillemin
Chloé
Jean-Michel Martial
Lamarck
Guillaume Cramoisan
Matthieu Pérac
Vanessa Valence
Fred
Raphaël Ferret
Hyppolite