Buddy Ebsen Barnaby Jones Actor Lee Meriwether Betty Jones Actor John Carter Lt. John Biddle Actor Mark Shera Jedediah Romano "J.R." Jones Actor James Naughton Guest Star Sharon Spelman Guest Star Linda Kelsey Guest Star Anthony Geary Guest Star Joan Tompkins Guest Star William Bramley Guest Star Sean Fallon Walsh Guest Star Carol Demas Guest Star Janice Carroll Guest Star Robert Sherman Writer Leslie H. Martinson Director