As Geoffrey Mark explains it, as an actor Peter Graves was frequently challenged whereas James Arness … well, not so much.

The main character is U.S. Marshal Matt Dillon, a clean, square, morally resolute hero played by James ... Arness, as one might imagine, had a unique insight into U.S. Marshal Matt Dillon. The ...

James Arness rides again as Matt Dillon, the U.S. Marshal he made popular in the 1955-75 television series. In this movie he goes after a renegade Apache named Wolf (Joe Lara) who has taken his ...