Gaslight is an American 1944 mystery-thriller film adapted from Patrick Hamilton's 1938 play Gas Light. It was the second version to be filmed, following the British film Gaslight, directed by Thorold Dickinson and released in 1940. This 1944 version was directed by George Cukor and starred Ingrid Bergman, Charles Boyer, Joseph Cotten, and 18-year-old Angela Lansbury in her screen debut. It had a larger scale and budget than the earlier film, and lends a different feel to the material. The film opens just after world-famous opera singer Alice Alquist has been murdered. The perpetrator bolted, without the jewels he sought, after being interrupted by a child—Paula (Ingrid Bergman), Alice's niece, who was raised by her aunt following her mother's death. Paula is sent to Italy so that she can train to be an opera star with the same teacher who once trained Alice. She studies with him for years, all the while trying to forget that terrible night at Number 9 Thornton Square in London.