Theresa Allore was a 19-year-old Champlain College student who vanished after being seen on campus the evening of November 3, 1978. She failed to return to student housing in Compton and was reported missing on November 10. The precise time and cause of death were never medically established because she remained missing through winter.

On April 13, 1979, after the thaw, her body was found face down in the Coaticook River near chemin de la Station, about one kilometre from Compton. She was wearing only bra and underwear; her outer clothing was never conclusively recovered. A coroner at the scene reportedly noted marks on her neck consistent with strangulation, but decomposition and long exposure to water prevented a definitive cause of death. Her wallet was found a week later along chemin McDonald, roughly 10 kilometres from the recovery site; identification was inside but the money was missing.

No one has been arrested or charged. Investigators and family researchers later examined potential links to other Eastern Townships cases and to violent offender Luc Yoland Grégoire, but nothing was proven in court. The Sûreté du Québec continues to list the file as unresolved. Did anyone in the area around Compton or Champlain College in November 1978 notice anything unusual that might help the investigation?