Chester sees a guy come to town that he knew back in Missouri and tells Marshal Dillon that he knows the guy is there to kill him, but won't say why. Matt goes over to the Long Branch to talk to the fellow, and the stranger claims he never heard of Chester, and that he is riding around looking for a job. Chester is on edge just the same and carries a short gun around with him all of the time.
One night when some drunk cowboys shoot up main street, Chester ducks back in the alley and is shot in the arm. Chester claims that the fellow from Missouri did it, but Matt mentions that it could just be a stray bullet from the cowpokes, which Chester cannot deny. Matt again goes and talks to the stranger. And then a tell - I'll let you watch and see how Marshal Dillon comes to think that maybe Chester is telling the truth.
In the end, Dillon has a clever way of solving things, and you find out about a side of Chester - a chivalrous side that could be riled to anger and action under the right circumstances - that you've never seen before.
It's funny, but for the famous opening credits of Gunsmoke always showing Matt Dillon involved in some dual on main street, solving a problem with his gun, Dillon used his head to solve so many problems in Dodge City. He really shared a lot in likability and style with Andy Taylor of the Andy Griffith show, except in the Dodge City of the wild west Marshal Dillon at least had to wear a gun, whether he used it or not.