6 Episodes · Premiered January 24, 2019 · Ended March 6, 2019
The autumn season starts to shroud Algonquin Bay, but the glorious fall colours can't hide the town's most gruesome double murder. As Detectives John Cardinal) and Lise Delorme's investigation brings them precariously close to a doomsday cult with nothing to lose, Cardinal launches his own investigation into a case far more personal and dangerous.
John struggles in the aftermath of his wife's suicide; Lise becomes lead detective on two seemingly unrelated cases.
Cardinal and Delorme struggle to identify the victims, unaware that there is a witness to the crime, who is being stalked by the murderer.
As Sharlene "Mama" Winston and her family hold Lloyd Kreeger captive, Cardinal and Delorme flush out an unexpected ally in their search for the killers; Cardinal confronts a man he believes may be connected to Catherine's suicide.
Armed with new evidence, Cardinal and Delorme make a break in the case that could explain the motive behind the murders.
Detectives Cardinal and Delorme discover the identity of the Cottage killer; Cardinal receives a gift that sheds light on Catherine's death.
Cardinal finds some evidence that may be proof of Catherine's murder; Cardinal and Delorme come face-to-face with Mama.
