The word “gaslight,” when used as a verb, means “to manipulate someone into questioning their own sanity; to subtly drive someone crazy.” It’s a term that’s been used on this website to describe the psychological damage inflicted by a psychopath.
I was aware that the word, when used in this way, was a reference to the 1944 movie Gaslight, starring Ingrid Bergman, Charles Boyer, Angela Lansbury and Joseph Cotton. But I had never seen the film. A few days ago, I watched Gaslight for the first time.
The story is set in Edwardian London, where an accomplished singer is mysteriously strangled in her home. The crime is discovered by the singer’s young niece, Paula Alquist (Ingrid Bergman). Paula is traumatized by the murder and leaves London to live in Italy.