36 Hours is a 1964 American war thriller film written for the screen and directed by George Seaton from a story by Carl K. Hittleman and Luis Vance, based on the 1944 short story "Beware of the Dog" by Roald Dahl. The film stars James Garner, Eva Marie Saint, Rod Taylor, and Werner Peters. In the plot, a Nazi German army doctor tries to obtain vital information from an American military intelligence officer by convincing him that it is 1950 and World War II is long over.