Summary: 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. (imdb)

Poster submitted by Gauntlet

AKA: Deviation

AKA: Don't Ring the Doorbell

AKA: The Cage

Genres: Drama, Suspense/Thriller, Horror

Country: USA

Directed By: Karen Arthur

Written By: Don Chastain, Éric Wesphal

Starring: Lee Grant, Carol Kane, James Olson, Will Geer, Budar, William Sherwood

More information at the Internet Movie Database