When someone tries to manipulate you or sow seeds of doubt in your mind, it's referred to as gaslighting. In this gripping mystery thriller that inspired the term, a husband attempts to convince his wife and others around her that she is insane. He alters small elements of their environment and then, when she questions what is going on, he insists that she is mistaken, remembering things incorrectly, or delusional. Why is he doing this, and what is he trying to cover up? Will she survive the increasingly intense pressure designed to drive her insane? A 1944 version of the film, directed by George Cukor, starred Charles Boyer, Ingrid Bergman, and a 19-year-old Angela Lansbury.