Hugh O'Brian Wyatt Earp Actor Douglas V. Fowley Doc Holliday Guest Star Morgan Woodward Shotgun Gibbs Guest Star Randy Stuart Nellie Cashman Guest Star Damian O'Flynn Judge Tobin Guest Star Trevor Bardette Old Man Clanton Guest Star Carol Thurston Emma Clanton Guest Star Stacy Harris John P. Clum Guest Star John Pickard Whitey Guest Star John Baxter Smiley Guest Star William Mims Dameron Guest Star Frank Gerstle Dick Gird Guest Star Steve Rowland Phin Clanton Guest Star Al "Lash" La Rue Sheriff Johnny Behan Guest Star Sam Flint Old Man Guest Star John Milford Ike Clanton Guest Star Steve Pendleton Thacker Guest Star William Phipps Curly Bill Brocius Guest Star Charles Fredericks Fennell Guest Star James Seay Judge Spicer Guest Star Roy Rowland Director Frank McDonald Director Frederick Hazlitt Brennan Writer John Dunkel Writer Wilda McGinnis Writer