An investigation explores Romain's final hours; Roxane, an Internal Affairs agent and Karadec's girlfriend, have found inconsistencies in the file on the death of Morgane's ex-boyfriend.

An undertaker is found dead in his funeral parlor; Morgane discovers that he was poisoned while working on the corpse of a woman, who officially died of cancer; when her coffin is exhumed, they find it empty.

A body is found on the side of the road and everyone believes she is a narcotics cop; Internal Affairs opens an investigation of Morgane, who tries to solve the murder from afar.

While Morgane is taking a training course in an emergency call center, she receives a call from a woman who claims a murder is taking place before her very eyes; when Morgane questions her, the woman swears she never called.

The body of a 20-year-old man is found; Morgane finds out he was a delivery boy who claimed to be an airline pilot.

Morgane discovers the body of a salesgirl who was a lottery winner and decided to walk away and resume a normal life; Commander Karadec is under investigation by Internal Affairs.

While an over-eager journalist sticks her nose into a case, Morgane struggles to get through her break-up; her living situation at Celine's is uncomfortable, and she decides to take her kids to sleep at the scene of the crime.

The charred body of a 17-year-old boy is found in the family barn; Morgane and Karadec's investigation initially points to the theft of a cow at his parents' farm.