In this Gothic tale, Ida Lupino plays a housekeeper who manipulates the lady of the house, a former chorine played by Isobel Elsom, into letting her two 'eccentric' sisters stay for a prolonged visit. A large bread oven sits in the parlour like Chekhov's gun. This episode is spoiler-free.
At the end, I read Ida Lupino's essay 'Me, Mother Directress' from the book Hollywood Directors 1941-1976, edited by Richard Koszarski, published in 1977.