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Sebastien Metivier - November 1, 1984 - Montreal, Quebec


Missing person poster for Sébastien Métivier with three images: childhood photo, age progression, and sketch. Contact: 514 236 9127.

Even though Sebastien Metivier was only eight years old when he went missing on November 1, 1984, police thought he had runaway. Maybe it was because a twelve-year-old boy, Wilton Lubin, went missing with him. The dozens of calls police received from people saying they had seen the boys, only reinforced their runaway theory. But when Wilton's body was found was found in the St. Lawrence River, near Ile Charron in the early morning of December 2, 1984, the runaway theory was put to rest. Wilton was found wearing the same clothes he had been wearing on the day he went missing.


Smiling child with short hair against a blue background, exuding a cheerful mood. No visible text or notable patterns.
Wilton Lubin (12)
Smiling child in a red and white vest over a yellow shirt, sitting against a plain background. The mood is cheerful and warm.
Sebastien Metivier (8)

On the night of November 1, 1984, Sebastien and Wilton attended a hobby workshop in St. Nom de Jesus Church, at 1645 Desjardins Avenue. The boys were last seen leaving the church at 9 pm to walk home. Sebastien lived at 1415 Desjardins Avenue and Wilton at number 1445.


Aerial map of a Montreal neighborhood with streets, buildings, and green roofs. A red circle highlights a rooftop on Rue Adam.
The church where Wilton and Sebastien were last seen is circled in red. The homes of Wilton and Sebastien are marked with red x's. As you can see, Wilton and Sebastien had to walk a distance covering only 6-10 houses to reach home safely.

Wilton and Sebastien were not the only boys to go missing in Montreal on November 1. Shortly before 1 pm that day, four-year-old Maurice Viens was lured into a car by a man offering him candy. Maurice had been playing at a park with his friend, Manuel, who also lived next door to him on Dorion Street. It was on their walk home from the park that the man in the car approached the boys and offered them both candy. Manuel refused, Maurice accepted.



Young child with blonde hair and a neutral expression, wearing a light-colored shirt. Plain background. Focus on the child's face.
Maurice Viens (4)

On November 6, 1984, Maurice's battered body was found in an abandoned house in St. Antoine-sur-Richelieu - 65 km away from Montreal.


In 2013, the Surete-du-Quebec announced a major development in Sebastien's case. A special team of investigators believed a serial killer may be behind his disappearance and the murders of six other children, including Maurice Viens and Wilton Lubin. The other children are Denis Roux-Bergevin, 5, Pascal Poulin, 10, Marie-Eve Lariviere, 11, and Tammy Leaky, 12.



Blurry close-up of a smiling child's face with a striped, textured effect. The background is plain and the mood is cheerful.
Pascal Poulin (10)

Pascal Poulin: On the morning of January 20, 1990, Pascal left his mother's home at 3455 rue Gascon, flat no. 3, in Montreal to meet friends for a ride on the metro. The next day around 5:30 pm, a man walking his dog found Pascal's body on a deserted road near boulevard Gouin, in Pointe-aux-Trembles, near the Rivière des Prairies.



Young boy in a blue tuxedo with a bow tie stands on a checkered floor, looking surprised or excited. Background is dimly lit.
Denis Roux-Bergevin (5)





Denis Roux-Bergevin: Denis disappeared from his home in the Ville-Émard district of Montreal, at lunchtime on June 3, 1985. His mutilated body was found three days later in a cul-de-sac in Brossard, among rubbish.



Young girl with long hair smiling slightly, wearing a white shirt. Plants in the background suggest an indoor setting; warm and nostalgic mood.
Marie-Eve Lariviere












Marie-Eve Lariviere: Marie-Ève ​​of Laval, was visiting the home of her parents’ friends when she disappeared March 7, 1992. Her body was found the next day near the railway line along Saint-Martin Boulevard, about five miles from where she was last seen.






Woman with glasses and long hair smiles at the camera in a black and white portrait, wearing a shiny blouse. The background is plain.
Tammy Leaky (12)

Tammy Leaky: The 12-year-old girl disappeared during the evening of March 12th, 1981, after buying some milk and chocolate bars at Chez Bert, located in the Pointe Saint Charles neighbourhood of Montreal. At 10:45 pm that night, a 73-year-old man discovered her body in a field alongside Lindsay Street in Dorval's Industrial Park. She was transported to the Lachine General Hospital but was pronounced dead on arrival.









A close-up of a smiling child with short brown hair. The background is softly blurred. The mood is joyful and innocent.
Sylvie Tanguay (7)

In 1993, police went to question a repeat offender of violent crimes against children in connection with the disappearance of Sebastien Metivier. Jean-Baptiste Duchesneau had been convicted for the murder of seven-year-old Sylvie Tanguay in 1974. Pierre Sangello, head of Montreal Urban Community police forces major crimes division said that they had established that Duchesneau lived near Wilton and Sebastien and was in contact with Sebastien shortly before he and Wilton disappeared. On November 1, 1993, the nine year anniversary of the disappearances of Maurice Viens, Wilton Lubin, and Senastien Metivier, detectives visited Duchesneau in La Macaza penitentiary where he was serving a one year sentence for the sexual assault of a seven-year-old girl. While he denied having anything to do with the crimes against Maurice, Wilton, and Sebastien, detectives were not satisfied with his answers. Duchesneau agreed to undergo a polygraph test on November 3, 1993 regarding the disappearance of Sebestien Metivier. On November 2, 1993, Duchesneau committed suicide by cutting his own throat. Sangello said, "Duchesneau never admitted to killing the Meitivier boy. In fact, he denied it."


To this day, police are unable to conclusively determine Duchesneau's innocence or guilt in regards to the disappearance of Sebastien Metivier and the murders of Maurice Viens and Wilton Lubin. In 2016, police did tell the parents of Denis Roux-Bergevin that they feel Duchesneau was responsible for the murder of their little boy.


Police followed leads of other possible suspects in the disappearance of Sebastien and murders of other children in the same time frame in Montreal. They have yet to be able to charge any of them.


I was unable to find out why or exactly when Duchesneau was released from jail for the murder of Sylvie Tanguay but he was free in less than ten years, since he was living in Montreal on November 1, 1984. The sexual assault of the seven-year-old girl for which he was serving time in 1993 obviously occurred in 1992 or 1993. The disappearance of Sebastien Metivier (1984) and murders of Maurice Viens (1984), Wilton Lubin (1984), Denis Roux-Bergevin (1985), Pascal Poulin (1990) and Marie-Eve LaRiviere (1992) all fit the timeline for Duchesneau to have committed the crimes. Tammy Leaky was killed in 1981, only 7 years after the murder of Sylvie Tanguay. Was Duchesneau a free man responsible for her murder? Or was there another serial killer operating in Montreal during this time? The brother of Theresa Allore, who was killed November 3, 1978, started a website investigating her murder. Eventually he started investigating all unsolved disappearances and murders in Montreal. His entire site is a valuable resource. Tammy's murder is the 21st and last listed of unsolved murders of women in the Montreal area occuring between April 26, 1971 and August 3, 1979, and then of course, Tammy was killed in March of 1981. The last three links are links to posts on his website.


If you have information regarding the disappearance of Sebastien Metivier, please contact any of the following:


  1. Service de police de la Ville de Montréal 514-393-1133Reference Case#: 285-52-841101-045

  2. Crime Stoppers: 1-800-222-TIPS(8477) or online at https://www.canadiancrimestoppers.org/submit-a-tip/submit-a-tipCrime Stoppers provides anonymous tipping

  3. Send email to the National Centre for Missing Persons and Unidentified Remains at: canadasmissing-disparuscanada@rcmp-grc.gc.ca



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