Between 1970 and 1985, the greater Montréal area experienced about ten murders involving acts of sexual violence. Three experts, Claude Sarrazin, Guillaume Louis and Sophie Charest, examine the hypothesis about one serial killer who was in Québec during this period.
Sur les traces d'un tueur en série (Season 1)

Episode 1 (Episode 1)
Air date: 2020-01-30
Runtime: 46 min
Overview: Between 1975 and 1985, dozens of women were murdered in the greater Montreal region. A team of experts reopen the investigations.

Episode 2 (Episode 2)
Air date: 2020-02-06
Runtime: 46 min
Overview: In April 1977, similarities between the murders of Jocelyne Houle and Denise Bazinet lead the team on the trail of a serial killer.

Episode 3 (Episode 3)
Air date: 2020-02-13
Runtime: 46 min
Overview: One of the victims' brother receives information about the murder of his sister. The team sets out on the trail of a murderer in Chambly.

Episode 4 (Episode 4)
Air date: 2020-02-20
Runtime: 46 min
Overview: The team analyzes the similarities between the cases of Katherine Hawkes and Diane Gaudreault, murdered in 1977 and 1979 in Montreal.

Episode 5 (Episode 5)
Air date: 2020-02-27
Runtime: 46 min
Overview: A link between the assassination of Nicole Gaudreault and that of another young woman leads the team to consider a new track.

Episode 6 (Episode 6)
Air date: 2020-03-05
Runtime: 46 min
Overview: A former Sûreté du Québec investigator is on the trail of a suspect in the case of Joanne Dorion, murdered in Laval in 1977.

Episode 7 (Episode 7)
Air date: 2020-03-12
Runtime: 46 min
Overview: The team is looking into a new track in connection with the murder of Sharron Prior and makes correlations between this crime and others.

Episode 8 (Episode 8)
Air date: 2020-03-19
Runtime: 46 min
Overview: The team manages to establish connections with William Fyfe. For the bereaved, this new track is a ray of hope.
