When an ex-marshal passing through town is shot in the back, Matt suspects a new saloon gal might have had something to do with it. 

Matt and Chester find Rod Ellison shot and paralyzed on the prairie and return him to Dodge for surgery. Ben Witter abrasively advises Matt that he is a deputy sheriff from Pueblo who has come to Dodge to arrest Ellison for robbery, but Matt is suspicious of Witter's refusal to produce a valid arrest warrant.