Monsters Crash the Pajama Party(1965)

movie - first aired/released 1965-01-01 - audience 4.2

Directed by David L. Hewitt

A group of teenage girls spends the night in an old dark mansion as an initiation into a college sorority. What they don't know is that the building is actually the headquarters for a mad scientist and his hunchbacked assistant, who are experimenting with turning humans into gorillas.