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.

Jewel thieves quickly dispose of the loot when the alarm is raised, then track down the family upon whose truck they threw them, meanly interrogating them in the hope of getting them back.

A mad scientist implants an electronic device into the brain of an injured soldier, which turns him into a psychotic killer.