Synopsis by Hal Erickson
Charles Starrett once more plays the masked, do-gooding Durango Kid in Pecos River. While in mufti, however, Starrett is a government agent, posing as a bandit to expose a gang of mail thieves. He also takes time to teach Jack (later Jock) Mahoney, the hotheaded son of a murdered stagecoach driver, how to use his six-gun with accuracy and discretion. Mahoney also serves as Charles Starrett's stunt double in the climactic action sequence. Also on hand is Starrett's perennial sidekick Smiley Burnette, this time cast as an itinerant peddler. The feminine interest is provided by Delores Sidener, a Columbia starlet whose career apparently began and ended with Pecos River.
agent [representative], bad-guy, cowboy, good-guy, lawman, mail, outlaw [Western], robbery