Marc St‑Laurent, 59, disappeared from Lebel‑sur‑Quévillon, Quebec, in late spring 2012. Reports conflict about his last confirmed sighting: one account places him at his residence on May 17, 2012, while another lists him on a bench outside the Place Quévillon grocery store on May 30, 2012. He was described as 5 feet 11 1/2 inches tall, about 220 pounds, with grey hair, a grey beard, and blue eyes.

Initial searches by the Sûreté du Québec around Lebel‑sur‑Quévillon turned up nothing. On July 26, 2012, his white 1992 GMC Sierra pickup was found abandoned on a federated snowmobile trail roughly three kilometres from town; that discovery produced no breakthrough. Volunteer search teams revisited the area in June 2015, including divers who explored nearby waters, but no new evidence emerged.

The differing last‑seen dates and the truck’s remote location leave major unanswered questions for family and investigators.