From Cold to Closed: Advances in DNA Analysis Helped Solve Cold Cases in 2025

Montreal police Cmdr. Francois Sauve (L-R), Montreal police Cmdr. Melanie Dupont and Suzanne Marchand, senior executive director of the provincial crime lab, announce the resolution in the 2008 murder of Catherine Daviau during a news conference in Montreal, on Sept. 17, 2025. The Canadian Press/Sidhartha Banerjee

In a Quebec courtroom last October, Sylvie Desjardins delivered a message to her daughter’s killer that was 30 years in the making.

“You thought you were taking a life, but in truth, you only added weight to your own existence,” she told killer Réal Courtemanche.