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 matched the story Behan later told at the coroner's inquest. Though saloon-keeper Andrew Mehan had seen Tom deposit his pistol after his beating by Earp and before the gunfight, none of the Earps had any way of knowing that Tom had left his revolver at the saloon. Hotel keeper Albert "Chris" Billickie, whose father Charles owned the Cosmopolitan Hotel, saw Tom McLaury enter Bauer's butcher shop about 2:00 p.m. He testified that Tom's right-hand pants pocket was flat when he went in but protruded, as if it contained a pistol (so he thought), when he emerged. Retired army surgeon Dr.