Based on the play by Reginald Denham and Edward Percy, this drama focuses on Ellen Creed (Ida Lupino), a housekeeper who looks after Leonora Fiske, a retired actress living in the English countryside. When Ellen's eccentric sisters (Edith Barrett, Elsa Lanchester) visit their sibling at Leonora's home, tensions soon lead to murder. Though the death is carefully covered up, will the murderess get away with her crime, or will she be brought to justice?