In May 1991, 34-year-old Yvonne Rouleau was tortured and murdered at the Nozzles Gas Bar where the mother of three worked in Kingston, Ontario. But the horror didn't start there. Reporter Caryn Lieberman travels to Kingston to hear from the families and survivors reclaiming their voices in order to tell this story and to learn how the investigation into Rouleau's case led detectives to a series of other horrific attacks targeting some of the most vulnerable members of the community, the full details of which took decades to come to light.

In the spring of 2006 Calgary Police received an ominous call from someone worried a woman was being held captive in a downtown rooming house. Officers responded but found nothing suspicious. Over the next few days two patrol officers heard similar stories from several other people as details got more and more disturbing– alleging a woman had been held, tortured and killed. How could they solve a crime they weren't sure had been committed? And without knowing if there was a victim?