Jean Berthiaume was 40 when he was last seen in Montréal on December 15, 1988. He is described as 5 feet 11 inches tall, about 72 kilograms, with brown hair and blue eyes.

A key detail in the case is that his vehicle was found abandoned at Dorval Airport (now Montréal–Pierre Elliott Trudeau International Airport). Whether he intended to travel, boarded a flight, or met someone at the airport is unknown; police have not released information about the car’s condition or any items left inside. The investigation remains open and unresolved according to the Service de police de la Ville de Montréal.

Few public details about leads or theories have been shared, leaving many unanswered questions about Jean’s last movements and state of mind. If anyone knew Jean, saw him around December 15, 1988, or has information about his car at Dorval Airport, please come forward.