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 (film) to Tombstone to face off against the Earps at the O.K. Corral. Holliday, who is sick from tuberculosis, joins them. Though Virgil and Morgan are wounded in the gunfight, all six in Clanton's gang are killed, including Billy, who is given a chance to surrender but refuses. After the fight is over, Wyatt joins Holliday for a final drink before heading off to California to meet Laura, as promised. There are historical inaccuracies contained in the film depiction of the Gunfight at O.K. Corral: Part of the movie was shot on the set of Paramount Ranch. Reviews were generally positive.