Nurse Charlotte Beale arrives at the isolated Stephens Sanitarium to work, only to learn that Dr. Stephens was murdered by one of the patients and his successor, Dr. Geraldine Masters, is not very eager to take on new staff. Charlotte finds her job maddeningly hard as the patients torment and harass her at every turn, and she soon learns why Dr. Masters is so eager to keep outsiders out.
Dracula is resurrected, preying on four unsuspecting visitors to his castle.
Relatives of a recently deceased man meet at his eerie castle for a reading of the will. They encounter a sinister piano player who turns out to be a toy maker, and his toys are imbued with murderous intentions.
A mad scientist terrorizes a city by kidnapping young women with his ape-man Gomar and then using them as subjects in sadistic brain transplant experiments. A female wrestler whose sister was one of the victims swears vengeance against the Mad Doctor.