As a child who was born in 1991, I remember when Discovery Channel Canada was actually based on knowledge and science; their series such as Forbidden Places, Exhibit A and Frontiers of Construction; these all caught and held my attention. Exhibit A was a Canadian production that was created by Robert Lang; it took a look at various cold cases and crimes that had occurred in the 80s to about 1997. Most of the stories were from Toronto and Ontario, fewer were from the rest of Canada and from the United States. For its time the acting and re-enactments were great, undertaken by alot Canadian actors.
As of this review you can currently find all 5 seasons for free on the Tubi website and app.