The Big Clock is a 1948 American film noir directed by John Farrow and adapted by novelist-screenwriter Jonathan Latimer from the 1946 novel of the same title by Kenneth Fearing. The black-and-white film is set in New York City, and stars Ray Milland, Charles Laughton and Maureen O'Sullivan. Elsa Lanchester and Harry Morgan, in an early film role, also appear. Noel Neill has an uncredited part as an elevator operator very early in the film.