Hour of the Gun accuracy than most motion picture accounts of the events and is based on the non-fiction book "Tombstone's Epitaph" by Douglas D. Martin, with a screenplay by Edward Anhalt. In "Hour of the Gun" Ike Clanton is shown, correctly, to have survived the Gunfight at the O.K. Corral, whereas previous films had him killed at the gunfight. Outnumbered but determined, Wyatt Earp (James Garner), his brothers Virgil (Frank Converse) and Morgan (Sam Melville) and ally Doc Holliday (Jason Robards) confront and clearly get the best of the Ike Clanton gang in a violent shootout at the O.K. Corral in the Arizona
Gunfight at the O.K. Corral open range for outlaws, largely unopposed by law enforcement officers who were spread thin over vast territories. The gunfight was not well known to the American public until 1931, when Stuart Lake published the initially well-received biography "" two years after Earp's death. The book was the basis for the 1946 film "My Darling Clementine", directed by John Ford, and the 1957 film "Gunfight at the O.K. Corral", after which the shootout became known by that name. Since then, the conflict has been portrayed with varying degrees of accuracy in numerous Western films and books, and has become an archetype