Renzo Palmer

As John Dhannay, a CIA agent stationed in Rome, plans the overthrow of an African government, he discovers one of his men has been in contact with agents from the other side. Before he can confront the traitor, the man seemingly goes crazy, sniping several people before taking an adulterous couple hostage in a hotel room.

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