A gang of jewel thieves plant their stolen merchandise on Duncan's pickup truck but can't find it later, when they come to make their claim. So they send crazed Vietnam veteran Morton to harass Duncan. Morton has a device implanted in his brain by Carradine, which accounts for his
insanity. He abducts the wife and child of Duncan, and Duncan pursues him. The jewels turn up in the doll of Duncan's daughter, who found them in the truck in the first place. Additional footage was shot the following year with Carradine, and the picture was re-released as THE FIEND WITH THE
ELECTRONIC BRAIN. Unbelievably, more footage and characters were added for a 1971 release under th...