The Witch Who Came from the Sea (1976)

In California, Molly is a deranged woman that babysits her nephews while her sister works hard sewing clothes for her clients. Molly works as waitress in a restaurant in the night shift and is the lover of the owner. She has fantasies with other handsome men. But Molly has also recollections of her childhood, when she was sexually abused by her father. Her insanity leads her to a murderous crime spree against men.