Season 1: Forty Words for Sorrow John Cardinal (
Billy Campbell) is a troubled and brooding police officer in Algonquin Bay, who was removed from the homicide squad as a result of chief Noelle Dyson's (
Kristen Thomson) belief that he had become obsessed with his investigation of a missing
Native Canadian girl. When the girl's body finally turns up, he is reassigned to the case with a new partner, Lise Delorme (
Karine Vanasse). What he does not know is that Delorme has been assigned to investigate him as part of a corruption probe that has identified Cardinal as possibly collaborating with a local drug dealer. The investigation widens when another missing person case with similar patterns leads Cardinal to believe that a
serial killer may be active in the area.
Season 2: Blackfly Season A young woman suffering from amnesia after having been shot in the head appears in Algonquin Bay. Soon mutilated bodies, in accordance with some occult religious rituals, are discovered. The bodies are members of a local group of bikers known for trafficking drugs. John Cardinal and the team suspect that someone is trying to replace the gang in the drug trade. The mental health of his wife still worries him. Musgrave thinks he has finally found the evidence he is looking for.
Season 3: By the Time You Read This The suspicious death of Cardinal's wife Catherine coincides with a double murder, and Delorme is ordered to take the lead in the murder investigation. Reluctant to believe that Catherine committed suicide, Cardinal begins investigating other possibilities, whilst dealing with a succession of anonymous letters blaming him for the event. Noelle Dyson, recovering from the death of her sister, tries to reason with another prospective suicide and is devastated when she fails to prevent him killing himself.
Season 4: Until the Night After a prominent politician's husband is abducted and then left to die from exposure, Cardinal and Delorme suspect that a hired killer is targeting those close to four people, out of revenge for a cover-up in their past. Cardinal and Delorme grow closer but this case will be their last together as Delorme takes a new job in Toronto. ==Cast and characters==