Castle on the Hudson (UK title: Years Without Days) is a 1940 American film noir drama directed by Anatole Litvak and starring John Garfield, Ann Sheridan, and Pat O'Brien. A thief is sent to Sing Sing Prison, where he is befriended by the reform-minded warden. The film was based on the book Twenty Thousand Years in Sing Sing, written by Lewis E. Lawes, whom the warden was based upon.