A woman in a hypnotic state recounts to two doctors the details of a horrific experience from her past life that began with the mysterious and sudden disappearance of her husband.
One of only two survivors from a Martian expedition is so traumatized she doesn't remember the circumstances of the trip.
Conducting weird scientific experiments, crazed Dr. James Brewster, aided by his colleague Dr. Randall, has managed to transform himself into a hairy, stooped-over ape-man.