[4] Psycho A-Go-Go was originally a straight action thriller, about a psychotic young man named Joe Corey who participates in a diamond heist, but the stolen jewels wind up concealed in a child's doll.
[5] There were a number of musical nightclub scenes in the film, as director Al Adamson was trying to promote actress Tacey Robbins' singing career at the time.
Psycho A-Go-Go was re-edited, with some scenes removed and additional footage featuring actor John Carradine as a mad scientist added, and the film was re-released in 1969 as a science-fiction movie by American General titled The Fiend with the Electronic Brain.
[6] In this version, Joe Corey is an injured Vietnam War veteran who has become violently insane because a mad scientist named Dr. Vanard (John Carradine) has experimented on his brain.
[7][8] Joe Corey is an injured Vietnam War veteran who has become violently insane because a mad scientist named Dr. Vanard (John Carradine) experimented on his brain.