A professor stays in a mysterious castle where all kinds of strange beings live, such as the Wolf Man, the Rubber Boy, the Legless Man, the Living Torso, among others.

An architect and his wife are staying in an empty castle in California. They are joined by an unhappily married lawyer and his wife. Things start getting strange when they spot a half man/half beast prowling around the house and keep seeing a headless woman wandering the grounds.