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 Holliday's walking-stick in return. As usual, the Earps carried their revolvers in their coat pockets or in their waistbands. Wyatt Earp was carrying a .44 caliber American 1869 Smith & Wesson revolver. Holliday was carrying a nickel-plated pistol in a holster, but this was concealed by his long coat, as was the shotgun. The Earps and Holliday walked west, down the south side of Fremont Street past the rear entrance to the O.K. Corral, but out of visual range of the Cowboys' last reported location. Near the corner of Fourth St. and Fremont St., the Earps ran into Sheriff Behan.