Andre Demange was 52 when he was last seen in Montréal on September 2, 1983. A few days after his disappearance, personal belongings belonging to him were found near the water at the intersection of Des Ormeaux and Bellerive streets. Born in 1931, he was 5 feet 11 inches tall, weighed 81 kilograms, had brown hair and brown eyes, and a scar on his chest.

Those items by the water are the last significant public development in the file; there are no further confirmed details about his movements or about how he came to be missing. The circumstances remain unexplained and the case unresolved.

If anyone knew Andre, saw him around early September 1983, or has information about the Des Ormeaux and Bellerive area at that time, please share what is known.