en.wikipedia.org
I met Theresa Allore about two weeks before her disappearance, and I knew her brother Andre before that; he was the best friend of a guy who lived in the same apartment building as I did. I didn't know that Andre and Theresa were brother and sister until after she disappeared. I've been in touch with John by e-mail several times over the years, (he's a few years younger; I didn't go to school with him).
The unsolved murder of Theresa Allore, who died on November 3, 1978. The project has grown to include unsolved murders of women in Quebec.
theresaallore.com
Has articles about unsolved murders, with a large archive of posts. I get an e-mail notification every few days.
This is not a cold case; Sherbrooke police made very little effort to try to solve it, and they destroyed all of the physical evidence from the crime scene. I have my own theory as to whom may have done the deed, and why both the school and the police department would have collaborated in the cover-up. I personally have an air-tight alibi; I was with the Football team out-of-town on a road game when she vanished. This is a good subject to google, for true crime buffs.