Facing a series of complex murder cases, new police commander Hélène Bach must learn to work with the brilliant yet exasperating Raphaël, who can make the dead speak like no-one else.
Cast:Tomer Sisley , Yannig Samot , Philypa Phoenix , Côme Levin , Pauline Cheviller , Hélène de Fougerolles , Leslie Medina , Constance Labbé , Aliocha Itovich , Caterina Murino , Gabriel Caballero , Aminthe Audiard , Augustin Ruhabura , Félix Bossuet , François Feroleto , Olivier Sitruk , Frédéric Saurel , Hugo Bardin
A series of murder victims are found posed as marionettes, and Balthazar can't help but come back to help solve the problem even though he is wanted by police.
Under house arrest, Balthazar passes the time by spying on his neighbors and witnesses a teenage boy hanging himself with a duck mask over his face. Meanwhile, a figure in a duck mask kills three strangers in Paris. Is there a connection?
Balthazar is anxious to get back in the saddle, so he decides to perform an autopsy on a body in the morgue, but he finds a bomb inside the body.
A minibus is found in a field with it's passengers missing, the driver mentions seeing a bright light. Could it be aliens? Things get even stranger after mutilated bodies turn up in a crop circle nearby-but not the people who disappeared.
A father, mother and son are executed at a roadside rest stop, but the victims were posing a family to transport drugs-which are now gone. Following the trail back to the dealer, Balthazar and Camille wind up in a dangerous contest.
Maya escapes from prison with Alexandre's help. Their plan becomes clear when Camille wakes up in a coffin, with a live feed playing at the institute. But that's only the start of the deadly game between the Balthazar brothers.