RIchard Kelton (1943-1978) Stephen Collins, Star Trek: The Motion Picture, 1978.     Doug McKeon, Centennial, TV, 1978.    After his first day’s shooting, Kelton was found dead of carbon monoxide poisoning.  McKeon took over for four episodes in the saga about the evolution of Centennial, Colorado.  Copyright © 2023 Crawley's Casting Calls. All Rights Reserved. Joomla! is Free Software released under the GNU General Public License.