Sylvie Laverdiere,
On April 18, 1989, Sylvie Laverdière was found dead in her apartment in Sainte-Thérèse. She was partially nude and the crime scene showed that she had been strangled. Her body had also been mutilated.
The victim's purse was found 2.5 km from her residence, along chemin Sainte-Thérèse, not far from Autoroute 640.
At the time of her death, Ms. Laverdière was 24 years old. She was the manager at Centre de conditionnement Mathers (Nautilus), in Rosemere. She worked mainly during the evenings and usually left the centre around 11 p.m. for her apartment, where she lived alone. The witnesses met with in the course of the investigation described the victim as a candid, forthright and talkative person. She had no known enemies.