James Arness Marshal Matt Dillion Actor Milburn Stone Dr. Galen "Doc" Adams Actor Ken Curtis Festus Guest Star Buck Taylor Newly Guest Star Louise Latham Mrs. Shepherd Guest Star Kathleen Cody Anna May Guest Star Tom Leopold Chester Guest Star John Reilly Orlo Guest Star Parker Stevenson Steven Guest Star Simon Scott Mr. Rogers Guest Star Herb Vigran Judge Brooker Guest Star Elizabeth Harrower Mrs. O'Roarke Guest Star Vincent McEveety Director Calvin Clements Sr. Writer