- HD 1080
- Runtime: 102m.
- Status: Released
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- Languages: en
- Country: United States of America
- Director: Karen Arthur
- Stars: Lee Grant, Carol Kane, Will Geer, James Olson, William Sherwood
- keywords: sibling relationship, obsession, cage, incest, madness, woman director
- Slogan: A terrifying love story.
- The The Mafu Cage is featured in the top rankings of 1978
- #20 in Top Thriller Movies of 1978
- #13 in Top Horror Movies of 1978
Two strange sisters live in a crumbling mansion, where they keep a pet ape, which belonged to their late father, locked in a cage. While one of the sisters seems to be keeping her head on straight, as it were, the other appears to be sinking further and further into barbarism and insanity.