When called to a crime scene, unconventional forensic pathologist Raphaël Balthazar immediately clashes with the new, no-nonsense chief inspector, Hélène Bach. But they must work together to solve the double homicide of a public prosecutor and his wife, who were gunned down in their home, leaving behind their traumatized young daughter.

Reeling from the realization that the person who murdered his wife, Lise, could still be at large, Balthazar investigates the gruesome killing of a man.

Balthazar examines a frozen corpse found in a truck. The police have few leads until he finds a piece of evidence that connects the victim to a seemingly unrelated case.

While at the movies, Balthazar is called upon to help an apparent stabbing victim and soon finds that her fiancé has also been attacked.

Balthazar examines a dismembered corpse found in the river, but when the body parts don’t match up, he realizes there’s another victim. As Bach investigates the crime, Balthazar debates whether to tell her that Lise’s killer may have committed six other murders.

After a horrific car accident, Balthazar determines that a woman found at the scene actually died several hours earlier, her corpse deposited in one of the car trunks.