I may have missed someone, but by my count only six actors have lines in this ultra-spare Western. The production comes from respected director Robert Aldrich's independent company with William Conrad himself producing. That may account for Quinn's appearance in a cheapie so soon after his Oscar for Lust for Life (1956)—plus, the likelihood that the streamlined production could be shot in less than 2 weeks.
As a Western, it's an offbeat concept— Sheriff Conrad returning fugitive Quinn from Mexico to stand trial. The narrative is basically two nervous guys riding across the great outdoors with some drunken Apaches lurking in the background. No wonder the sheriff can't relax. However, the movie comes across as more interesting than suspenseful, mainly because crucial compromises are made with Quinn's character. He's simply made too likable and respected to generate the kind of tension needed, which may have been the price of putting a headliner like Quinn in the lead. It's really Conrad's resolute sheriff that holds interest as a number of surprising self-doubts begin to unfold. His nicely shaded performance shows how much more than a great radio voice Conrad was. Anyway, it's an entertaining little programmer with a rare distinction. It's the only film I've seen with more untranslated lines outside English than in English—an unusual effect. So, unless you speak Spanish, you may have to do a lot of inferring.
(In passing—it's probably a matter of taste, but to my ear the title tune may be the worst of the era, bellowed out by a decidedly untuneful Eddie Albert.)