The Mafu Cage (1978)

1h 42m | PG-13

⭐ 6.065 / 10

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.