Buddy Ebsen Barnaby Jones Actor Lee Meriwether Betty Jones Actor John Carter Lt. John Biddle Actor Mark Shera Jedediah Romano "J.R." Jones Actor Lynne Marta Guest Star Robert Hogan Guest Star Lynnette Mettey Guest Star Alex Henteloff Guest Star Paul Mantee Guest Star Mary Jackson Guest Star Sudie Bond Guest Star Virginia Paris Guest Star Ann Newman-Mantee Guest Star Laurie Jefferson Guest Star Sean Morgan Guest Star Worley Thorne Writer Walter Grauman Director