Carole Dupont was 18 when she disappeared from Sainte-Thérèse, Quebec, on the night of December 22, 1973. She spent part of the evening drinking with a friend, Francine Decoste, at the Zodiac bar, then went on to the Hôtel Royal and the Hôtel Blainville. Witnesses later reported she left the Hôtel Blainville with three people, described as three men; she was never seen alive again.

On April 13, 1974, a resident walking behind the Foyer Drapeau retirement home at 100 Chanoine-Lionel-Groulx Street found human legs protruding from a snowbank. Carole’s body was recovered nearby with clothing and a knife reportedly close to the remains. Her autopsy showed extensive knife injuries to the torso, two wounds to the back, diagonal cuts across the thighs, and a cut to the left breast, findings the coroner concluded were consistent with a violent homicide.

Investigators focused on reconstructing her final evening and identifying the three people who left the Hôtel Blainville with her; numerous interviews were conducted but no one has been publicly charged. The Sûreté du Québec lists the case as unresolved (file 179-740413-013) and continues to seek information.