Whoever Slew Auntie Roo?

Mrs. Forrest (Shelley Winters), who's known as "Auntie Roo," has a holiday tradition of inviting orphans to her mansion for a party. But Roo isn't completely sane; she lost her husband and is obsessed with her deceased daughter, whose corpse she still keeps in the house. So when Katy Coombs (Chloe Franks) sneaks into the party with her brother, Christopher (Mark Lester), the deranged lady abducts the young girl with the hopes of replacing her daughter. Christopher must then try to save Katy.