Someone Knows Something host David Ridgen's latest investigation is 15 years in the making. Season 9 follows the story of Ontario teenager Christine Harron who disappears in 1993. A mysterious man confesses to her murder, but the police case stalls out — and then David steps in.

Episodes will be released weekly starting Wednesday, Nov. 6. Subscribe to CBC True Crime Premium on Apple Podcasts to get all episodes early and ad-free.