Hush... Hush, Sweet Charlotte (1964) - He Really Isn't Here, Is He?

Visiting cousin Miriam (Olivia de Havilland), whose motives are unclear, rescues fragile Bette Davis (title character), who thinks her lover John, whom most people think she butchered and killed, is around the house, with an unexplained twist, in Hush… Hush, Sweet Charlotte, 1964.