Deve ser o Black Sabbath (1963), em particular a terceira história, chamada "The Drop of Water".
Da Wikipedia:
In London, England, Nurse Helen Chester (Jacqueline Pierreux) is called to a large house to prepare the corpse of an elderly medium for her burial. As she dresses the body, she notices a sapphire ring on its finger. Chester steals it, [...] Chester finds the woman's corpse lying in her bed. It rises and floats toward her.