An Eye for an Eye (1981)
Sean Kane is forced to resign from the San Francisco Police Department's Narcotics Division when he goes berserk after his partner is murdered. He decides to fight alone and follows a trail of drug traffickers into unexpected high places. martial arts, police, undercover, chase, fight, san francisco, california, gangster, anti hero, revenge, vigilante, organized crime, drugs, urban setting, death, neo-noir, action hero