George Fenneman series, and then with John Stephenson when Dragnet returned to TV in 1967. It was Fenneman's voice which announced, "The story you are about to see is true. The names have been changed to protect the innocent." while Stephenson would be heard at the end of the episode describing the court trials and verdicts. He was the principal commercial announcer for the radio version of "Gunsmoke", and frequently introduced "Matt Dillon" (William Conrad) after the episode to extoll the virtues of L&M or Chesterfield cigarettes. He appeared on screen in the 1951 film "The Thing from Another World" and the
James Arness James Arness James Arness (born James King Aurness, May 26, 1923 – June 3, 2011) was an American actor, best known for portraying Marshal Matt Dillon for 20 years in the CBS television series "Gunsmoke". Arness has the distinction of having played the role of Dillon in five separate decades: 1955 to 1975 in the weekly series, then in "" (1987) and four more made-for-television "Gunsmoke" films in the 1990s. In Europe, Arness reached cult status for his role as Zeb Macahan in the western series "How the West Was Won". He was the older brother of actor Peter Graves.