Mad scientist Dr. Roland Gerard (Tom Conway) squirrels himself away deep in the jungle, using the native's voodoo for his experiments to create an indestructible being to serve his will. One...

Mad scientist Dr. Roland Gerard (Tom Conway) squirrels himself away deep in the jungle, using the native's voodoo for his experiments to create an indestructible being to serve his will. One unsuccessful attempt produces a hideous-looking female monstrosity who will not kill for him because he's using a good girl as his subject. He needs a bad girl and it is only whan a party of gold seekers stumbles upon his village tha Dr. Gerard finds the perfect subject for his work in the group's evil leader, the mercenary murderess Marilyn Blanchard (Marla English). The Doctor succeeds in creating his monster leading to a lively finale.