Hugh O'Brian Wyatt Earp Actor Morgan Woodward Shotgun Gibbs Guest Star Gary Gray Billy Clanton Guest Star Carol Thurston Emma Clanton Guest Star Monte Blue Low Dog Guest Star Michael Carr Young Geronimo Guest Star Trevor Bardette Old Man Clanton Guest Star Steve Rowland Phin Clanton Guest Star John Milford Ike Clanton Guest Star Mike Keene Col. Ingram Guest Star Roy Rowland Director Frederick Hazlitt Brennan Writer