Bête noire the collateral effects of an unforgivable act commited by Jérémy, a 16 year-old teenager. With the help of the psychiatrist-coroner in charge of the investigation, his mother tries to understand how her son, a seemingly normal boy, could commit such a heinous act. What caused this nightmare? When did everything change? Together, the two women try to solve the mystery of Jérémy.
Episode 1
Tragedy strikes at Beaufort College when a gunman opens fire, killing several students before taking his own life; the lives of the killer's family fall apart as they try to understand what could have led their son to commit such a brutal attack.
Episode 2
Tensions continue to rise at the Tremblays, as Lea, Jeremy's sister seems to be harbouring some secrets.
Episode 3
The fingerprints found on the murder weapon set the investigators on a new track; Lea finally confesses to a secret that's been eating away at her; the investigators learn more about Jeremy's personal life.
Episode 4
The police make a major breakthrough and suspect Jérémy had an accomplice; as Charlie's post traumatic stress gets worse, she decides to help with the investigation and reveals some new and important details.
Episode 5
The noose tightens as investigators follow the trail of Jérémy's suspected accomplice; Sergeant Boisvert and the coroner pursue the theory of radicalisation.
Episode 6
The investigators get their hands on a new and disturbing piece of evidence that sends shock waves through the investigation; Jeremy's parents take steps to approach the families of the victims.
