A man freezes his employee to death by locking him in the meat locker of his restaurant. Detectives Agnes and Thibaud solve this murder at a ski resort in the mountains.
An actor, Martial, believes he has the perfect alibi for the murder he committed. Detective Agnes is a huge fan of the actor and isn't objective in her investigation. Her Detective partner Thibaud picks up on clues Agnes missed.
The director of a funeral home is confident that he can get away with murder by switching corpses at the morgue. Detective Julie and her partner investigate the case.
Detective Louise and her assistant Fatou investigate when an unconscious man is pulled out of the ocean at a fishery. He has a mysterious mark on his back. Doubts arise as to his secrets and his past. In her personal life, Detective Louise has to decide if she wants a divorce or not, and has a heart to heart talk with her teenage daughter.
A man murders his sister's husband by adding something to his lasagna that he's allergic to. Detectives Reynaud and Laura uncover the motive and catch his mistake in covering up the murder.
