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Home Cold Cases

Cold Case: Missing Woman in Montréal, Québec – Mary Louise Helen Lejeune, Missing Since February 23, 1991

07/26/2025
in Cold Cases
Reading Time: 5 mins read
Cold Case: Missing Woman in Montréal, Québec – Mary Louise Helen Lejeune, Missing Since February 23, 1991
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🚨 Missing Woman Since February 23, 1991 in Montréal, Québec – Cold Case

Mary Louise Helen Lejeune was 28 years old when she was last seen on February 23, 1991, in Montréal, Québec. She reportedly left her residence following an argument with her then-boyfriend and never returned. Mary did not notify her family of her departure, something that was not entirely unusual at the time. According to her mother, she had previously left for short periods but typically returned within a week or two.

However, this time was different. Mary never contacted her family again. Despite living only a short distance away from her mother and stepfather, she made no effort to reach out. Her family believed strongly that had she been able, she would have done so. Disturbingly, a missing persons report was not filed until nearly a year after she was last seen.

Mary was known to have some unspecified behavioral issues, which may have contributed to her vulnerability at the time of her disappearance. Since 1991, there have been no confirmed sightings or clues regarding her fate. Her case remains unsolved and is classified as a cold case by authorities.

📌 Description

  • Full Name: Mary Louise Helen Lejeune
  • Missing Since: February 23, 1991
  • Age at Disappearance: 28
  • Would Be Today: 58 years old
  • Year of Birth: 1962
  • Height: 5’4″ (162 cm)
  • Weight: 115 lbs (52 kg)
  • Build: Slender/Thin
  • Hair: Brown, short
  • Eyes: Brown
  • Sex: Female
  • Race: White
  • Behavioural Notes: Known to have had unspecified behavioral problems

👕 Clothing Worn at the Time

  • Gray wool coat with a purple collar and wrists
  • Black jogging sweater
  • Black jogging pants
  • Brown leather boots

📞 How to Help

If you have any information about the disappearance of Mary Louise Helen Lejeune, please contact:

  • Service de police de la Ville de Montréal: 514-280-3376 (Case#: 221-21-910226-022)
  • Crime Stoppers: 1-800-222-TIPS (8477) or submit a tip online
  • RCMP National Centre for Missing Persons and Unidentified Remains: canadasmissing-disparuscanada@rcmp-grc.gc.ca (Reference: 2014003956)

🔗 Sources

  • Canada Unsolved
  • International Missing Wiki
  • RCMP Case File

👉 What You Can Do

This case has remained unsolved for over three decades. Mary Louise Helen Lejeune’s family deserves answers. Please share her story — even the smallest piece of information could help bring closure to her loved ones and resolution to this cold case.

📬 Stay informed with alerts, cold cases & located updates — right to your inbox:
https://missingpeople.ca/newsletter/

💛 This page is run independently to help raise awareness for missing people in Canada. If you’d like to support our work, you can do so here:
https://coff.ee/missingpeople

🌐 Visit CanadaMissing.ca — the official page of The Canadian Missing Persons Network, featuring links to our websites and social media platforms.

Français ci-dessous

🚨 Femme portée disparue depuis le 23 février 1991 à Montréal, Québec – Dossier non résolu

Mary Louise Helen Lejeune avait 28 ans lorsqu’elle a été vue pour la dernière fois le 23 février 1991 à Montréal, au Québec. Elle aurait quitté son domicile à la suite d’une dispute avec son petit ami de l’époque et n’a plus jamais été revue. Elle n’a pas prévenu sa famille de son départ, ce qui n’a pas immédiatement suscité d’inquiétude, car elle s’était déjà absentée temporairement dans le passé.

Mais cette fois, Mary n’est jamais revenue. Malgré la proximité de sa famille, aucun contact n’a été établi. Un signalement n’a été fait à la police qu’environ un an plus tard. Elle souffrait de problèmes de comportement non spécifiés, ce qui aurait pu accroître sa vulnérabilité.

Aucune apparition confirmée ni indice n’a été découvert depuis sa disparition. Son dossier est aujourd’hui considéré comme une affaire classée non résolue (cold case).

📌 Description

  • Nom complet : Mary Louise Helen Lejeune
  • Disparue depuis : 23 février 1991
  • Âge lors de la disparition : 28 ans
  • Âge aujourd’hui : 58 ans
  • Année de naissance : 1962
  • Taille : 1,62 m (5 pi 4 po)
  • Poids : 52 kg (115 lb)
  • Corpulence : Mince
  • Cheveux : Bruns, courts
  • Yeux : Bruns
  • Sexe : Femme
  • Origine ethnique : Blanche
  • Remarques : Problèmes de comportement non spécifiés

👕 Vêtements portés lors de la disparition

  • Manteau en laine gris avec col et poignets violets
  • Chandail de jogging noir
  • Pantalon de jogging noir
  • Bottes en cuir brun

📞 Comment aider

Si vous avez des informations concernant la disparition de Mary Louise Helen Lejeune, veuillez contacter :

  • Service de police de la Ville de Montréal : 514-280-3376 (Dossier : 221-21-910226-022)
  • Échec au crime : 1-800-222-TIPS (8477) ou soumettre un signalement en ligne
  • GRC – Centre national pour les personnes disparues : canadasmissing-disparuscanada@rcmp-grc.gc.ca (Réf. : 2014003956)

🔗 Sources

  • Canada Unsolved
  • Wiki international des personnes disparues
  • Fiche GRC

👉 Ce que vous pouvez faire

Ce dossier est classé comme non résolu depuis plus de 30 ans. La famille de Mary mérite des réponses. Partager son histoire pourrait faire toute la différence. Même une petite information pourrait faire avancer cette affaire non résolue.

📬 Restez informé des alertes, cas non résolus et mises à jour — directement dans votre boîte courriel :
https://missingpeople.ca/newsletter/

💛 Cette page est gérée de manière indépendante pour sensibiliser à la cause des personnes disparues au Canada. Pour soutenir notre travail, vous pouvez faire un don ici :
https://coff.ee/missingpeople

🌐 Visitez CanadaMissing.ca — la page officielle du Réseau canadien des personnes disparues, avec des liens vers nos sites web et nos plateformes sociales.

Subscribe To Our Newsletter!

Sign up to our newsletter for case updates, the latest missing people news and more!

Check your inbox or spam folder to confirm your subscription.

Tags: Cold CaseMontrealQCQuebec
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