The Fiend with the Electronic Brain was a re-release of Al Adamson's Psycho A Go-Go featuring new footage starring John Carradine that re-imagined the original film's story with a sci-fi plot.
In the 1930s, bored waitress Bonnie Parker falls in love with an ex-con named Clyde Barrow, and together they start a violent crime spree throughout the country, stealing cars and robbing banks.
A jewel thief crosses paths with a woman carrying a briefcase that the Americans, the Russians and the Chinese all want desperately, so he goes on the run with her figuring that what's inside the case has to be way more valuable than anything he could steal on his own.