Firebrands of Arizona on AllMovie

In this convoluted western, a sickly cowboy sidekick gets into a terrible fix when he is mistaken for a notorious bank robber and tossed in the clink. There is a huge bounty on the villain's head, and the sheriff happily anticipates the arrival of that bounty on the next stage, unaware that the real crook is waiting in ambush to steal the money. Meanwhile the sidekick's heroic compadre convinces the sheriff that he has the wrong man. Unfortunately, the robbery takes place before they can free the sidekick. The sheriff and the hero ride off to capture the crook. Unfortunately, by this time, the villain has snuck into the jail and has exchanged places with his doppleganger so when the sheriff and the hero bring the outlaw into prison they once again have the wrong man. The hero is then left to try to figure out which of the look-a-likes is really his partner and save him before hanging day.