While scuba diving in Puerto Rico, a millionaire, his wife, and their lawyer unwittingly become the last surviving human beings on Earth. What do they do now?
A documentary-style drama about the "Fouke Monster", a Bigfoot-type creature that has been sighted in and around Fouke, Arkansas since the 1950s.
Dr. Cameron (George Zucco) has succeeded in his experiments with a serum which will turn a man into a wolf-like monster and is ready to avenge himself on the men who caused his professional failure. He uses it on his gardener Petro (Glenn Strange) and one after the other is killed by his creation...
Ellen has been taking care of her insane younger sister Cissy ever since their explorer father died. When Cissy's pet ape dies in their mansion's dungeon and Ellen finds a boyfriend, Cissy's incestuous desire for her sister turns deadly.
