Hugh O'Brian Wyatt Earp Actor Douglas V. Fowley Doc Holliday Guest Star Morgan Woodward Shotgun Gibbs Guest Star Richard Benedict Briscoe Guest Star Brett King Marlin Guest Star Paula Winslowe Mrs. Ella May Stoney Guest Star Jan Arvan Emile Bertront Guest Star Michael Hinn Van Horn Guest Star Dennis Moore Dusty Claypool Guest Star William Fawcett Prospector Guest Star Paul Landres Director Frederick Hazlitt Brennan Writer