After spending a "lousy" 12 years in prison for a brutal sexual assault and murder, a young punk returns to San Francisco to seek revenge against Mike Stone (who was the arresting officer). And he's not picky about how he'll take that revenge -- or on who.

Stone looks for the arsonists who set a fire that killed two firemen.

Women keep turning up in hotel rooms strangled; the only lead is a witness who thinks he saw an air force Colonel's uniform. Keller goes undercover as an air force officer to infiltrate the base.

Mike and Dan pursue a smuggler who will stop at nothing to locate a dog collar containing stolen diamonds.