Fabio Testi is an undercover cop doubling as the bodyguard (hence, “Gorilla”) of a cantankerous middle-aged industrialist targeted for extortion.

Inspector Rizzo is accused of drug trafficking. In order to clear his name he has to find out who is the person, from a Mafia ring, who has infiltrated his…

Police Lieutenant Lon McQ investigates the killing of his best friend and uncovers corrupt elements of the police department dealing in confiscated drugs.