James Arness Marshal Matt Dillion Actor Milburn Stone Dr. Galen "Doc" Adams Actor Amanda Blake Kitty Russell Actor Robert Culp Joe Costa Guest Star Harold J. Stone Jim Downey Guest Star Scott Marlowe Tony Serpa Guest Star Ed Asner Sergeant Wilks Guest Star Michael Conrad Dick Corwin Guest Star Steven Marlo Corporal Mille Guest Star Elisha Cook Jr. George Guest Star Clegg Hoyt Stableman Guest Star Hank Patterson Hank the stableman Guest Star Philip Leacock Producer Mark Rydell Director John Meston Writer