James Arness Marshal Matt Dillion Actor Milburn Stone Dr. Galen "Doc" Adams Actor Ken Curtis Festus Guest Star Tim O'Connor Arnie Sprague Guest Star Barry Brown Jared Sprague Guest Star I. Stanford Jolley Beecher Guest Star Dack Rambo Ira Pickett Guest Star Harry Morgan Osgood Pickett Guest Star Ray Young Joseph Pickett Guest Star Annette O'Toole Edda Sprague Guest Star June Dayton Martha Sprague Guest Star Herb Vigran Judge Brooker Guest Star Joseph Dackow Producer Shimon Wincelberg Writer Philip Leacock Director