I'm a big fan of the show and I was glad to see the people still alive return for this movie. Matt is now retired from being the Marshall and Newly (Buck Taylor) now runs things. But Dillon is forced out retirement when old enemy gunslinger Mannon (Steve Forrest) gets of prison and comes hunting for revenge. This was the first of 5 Gunsmoke made for tv movies. Miss Kitty (Amanda Blake) returns and the chemistry with Arness is still there even though she spends most of the movie telling the back story of this feud through flashbacks.
It's no masterpiece, but if your fan of the show this one is worth checking out. I can't say that I found the following 4 movies to be worthwhile though. Just don't watch this movie expecting a great script.