Exhibit A: Secrets of Forensic Science

T04:C02 - S04:E02 - North Bay

An exhaustive 18-month investigation follows the murder of a young woman in North Bay. The prime suspect's DNA matches that on the woman's clothes. In a startling development, further DNA tests prove the wrong man has been charged. Out of the blue, a phone call from a prison administrator in Calgary sends the investigation in a completely new direction.