Exhibit A: Secrets of Forensic Science

On Victoria Day as fireworks are going off, someone is on a killing spree. The next morning, three prostitutes are found shot dead. One is a transvestite, one is a transsexual and the third is a woman. The bullets from each killing prove to come from the same gun. The investigation to find the gun and the shooter takes the police from the suburbs of Toronto to the harbour of Halifax in pursuit of a serial killer.