To say that Chuck Norris is the star of
Force of One
may smack of redundancy. Norris is cast as Vietnam vet Matt Logan, assigned to instruct a big-city narcotics squad in the intricacies of martial arts. His star pupil turns out to be Detective Mandy Rust (Jennifer O'Neill). Initially disinterested in law enforcement, Logan is galvanized into action when his adopted son is killed by the villains.
was designed as a follow-up of (though not a sequel to) the money-spinning Norris vehicle
Good Guys Wear Black
.