For devilishly mad 'astro-scientist' Dr. DeMarco, a typical day involves run-ins with reanimated corpses, bloodthirsty solar-powered killer robot zombies, Chinese communist spies, and vicious Mexican secret agents. But when a bloody trail of young female murder victims leads an intrepid CIA agent to his door, things get really interesting.
| Actor | Role |
|---|---|
 Wendell CoreyHolman | Holman |
 John CarradineDr. DeMarco | Dr. DeMarco |
 Tom PaceEric Porter | Eric Porter |
| JJoan PatrickJanine Norwalk | Janine Norwalk |
 Tura SatanaSatana | Satana |
 Rafael CamposJuan | Juan |
 Victor IzayDr. Petrovich | Dr. Petrovich |
 William BagdadFranchot | Franchot |
 Vincent BarbiTyros | Tyros |
| EEgon SiranySergio Demozhenin | Sergio Demozhenin |
| JJean PirieWoman Killed in Garage | Woman Killed in Garage |
| JJanis SaulLynn | Lynn |
| WWally K. BernsNot listed | Not listed |
| VVic LanceChauffeur | Chauffeur |
| RRod WilmothAstro Zombie | Astro Zombie |
| BBarbara RichardsGirl Strapped to Table | Girl Strapped to Table |
 Ted V. MikelsDrummer in Nightclub | Drummer in Nightclub |
| WWally MoonDetective Mike Webber | Detective Mike Webber |
| JJoseph HooverChuck Edwards | Chuck Edwards |
| JJohn HopkinsAgent Thompson | Agent Thompson |