One of Dodge's finest citizens is shot down in cold blood on Front Street. Marshal Matt Dillon (James Arness) soon discovers that he himself was the intended target, and that the killing was masterminded by an old enemy. But as the story unfolds, it turns out that there's a third man involved in the conspiracy. One of several episodes directed by frequent John Wayne collaborator Andrew McLaglen, "Spring Term" is based on the Gunsmoke radio broadcast of June 13, 1953. ~ Hal Erickson, Rovi