Former Army officer Emmett Egan (Herbert Rudley) arrives in Dodge City, in hopes of eventually replacing Matt Dillon (James Arness) as the marshal. Hoping to prove to Egan that his job is no bed of roses, Matt allows him to spend a week following him around as he carries out his duties. But Egan is not satisfied with just being an observer, and he insists on showing off his peacekeeping skills--with disastrous consequences. Featured in the cast as Clarise is country music legend June Carter Cash, here billed under her maiden name. This episode is based on the Gunsmoke radio broadcast of March 18, 1956. ~ Hal Erickson, Rovi