Action Jackson

A Detroit cop goes up against an evil car company owner. The businessman has been killing auto union representatives and replacing them with his own men, but Action Jackson is watching and stalking his every move. When the executive tries to frame Jackson for murder, he trips up and the cop finally catches him. Jackson is helped by a Motown singer who first sides with the auto man, but then switches her allegiance, and affections, to the cop. (official distributor synopsis)