Joanne Dorion was 17 when she disappeared after getting off a Laval Transit bus near Boulevard Arthur-Sauvé and Boulevard Sainte-Rose in Fabreville during the early hours of July 30, 1977. She had finished a midnight shift as a medical secretary at Sacré-Cœur Hospital and was last seen leaving the bus at about 12:30 a.m. Her parents reported her missing that morning when she did not return to the family home on 9th Avenue.

Her remains were found on August 11, 1977, in a wooded riverside area only blocks from her last confirmed sighting. The body was under branches and in an advanced state of decomposition; a Dominion shopping bag with identification and the torn, bloodied sleeve of her blouse were nearby. An autopsy determined she had been stabbed repeatedly, with wounds to the torso causing massive hemorrhaging. Investigators recovered her wallet but money was missing, and her eyeliner was found earlier in a nearby snack-bar parking lot.

Police questioned several people in the original investigation, including Jacques Chaing, who was later released; no one has been publicly charged in the killing. Later inquiries and a 2020 documentary have examined possible links to other unsolved 1970s attacks in the Montreal area, but no conclusive connection has been established. Does anyone have memories or information about Fabreville in July 1977 that could help explain what happened after Joanne stepped off that bus?