Lionel Lussier killed two friends of his girlfriend Ginette Amyot at the home and buried them in the basement.
He blamed her for the killings but a court did not believe his testimony.
Lussier, if he's alive, would likely have been freed in 2004.
Lussier first killed Sylvie Ranger, 17. She had escaped the Laval Detention Centre for Girls and dropped in on her friend Ginette in mid-March 1979.
Lussier apparently disliked Ranger because he feared that she would go to the police to accuse him of raping her.
Lussier later made a cryptic remark about her which led her to suspect he was involved in bad things that happened to her.
Then two months later Amyot brought her friend Marie Paul Guerin over. Guerin was a stripper and the three smoked hashish together for a few hours until one of the couple proposed a threeway. It went wrong and she ended up dead in the basement.
Lussier was sentenced to six months in prison for refusing to answer questions and was later given life.
Here's a translation of the La Presse coverage of the case
May 23 1979
Lussier held responsible by Raymond Gervais
Along with being held criminally responsible by Coroner Rock Heroux for the deaths of Marie Paule Geurin and Sylvie Ranger, both found lifeless on 13 May 1979 in the crawl space of 5187 Henri Julien, Lionel Lussier was condemned to six months in prison for refusing to testify in the coroners inquiry into the deaths of the two young girls.
According to corner Dr. Andre Lauzon, Marie Paule Guerin died from strangulation by a leather strap. Her body also had three stab wounds and it's believed she died 12 May.
Syvlie Granger died from a fractured skull which caused a brain hemorrhage. she was stabbed nine times as well and her body was left under a few inches of earth in the basement of Lionel Lussier's home.
According to Lauzon, that death took place in mid-March.
Ginette Amiot, then Lussier's girlfriend, testified that her friend Guerin came to the home 12 May and after smoking hash for several hours Lussier asked her to do a threeway.
"I was a bit shy because I knew Marie Paule wasn't used to doing it. We stripped and I started making love with her while Lionel watched us. She didn't like that and so I stopped. Lionel wanted to have sex with Marie Paule but she didn't want to. She finally accepted saying if you want go ahead. I went into the kitchen to smoke a cigarette and drink a soft drink"
When she returned Amiot saw her bloody friend and started screaming. "I saw blood on her stomach, I said Lionel we need to bring her to hospital. He said it's too late. He took her leather strap and put it around her neck to strangle her and then threw her body into the basement."
As for Ranger, the 17 year old girl, she was also a friend of Amyot and came to see her in March after fleeing the Laval detention centre. It's the last time Ginette saw her friend alive.
Lussier knew her but didn't like her. He was always scared he'd tell the police he raped her.
"I started to have my doubts and went into the basement and my heel got stuck in the ground. I knew that he already said he got rid of Syvlie and I didn't have nay news from her since mid-March. "
"After that I called a friend Claude Morin and told him all. I showed him MP's body in the basement.
Amyot said that Lussier told her that "after the second you're no longer scared."
Heroux found Lussier responsible for the deaths after hearing the testimony.