Hugh O'Brian Wyatt Earp Actor Douglas V. Fowley Doc Holliday Guest Star Morgan Woodward Shotgun Gibbs Guest Star Trevor Bardette Old Man Clanton Guest Star John Litel Capt. David Rowland Guest Star Al "Lash" La Rue Johnny Behan Guest Star Madge Kennedy Mary Rowland Guest Star John Milford Ike Clanton Guest Star Roy Rowland Director Frederick Hazlitt Brennan Writer