Wyoming Mail stars Stephen McNally as frontier postal inspector Steve Davis. Assigned to break up a gang of outlaws who prey upon mail trains, Davis goes undercover, posing first as a fugitive from justice. Joining the bandit gang run by the ruthless Cavanaugh (Howard da Silva), Davis discovers that the crooks have an "inside man" within the railroad company itself. Alexis Smith co-stars as the "bad" girl who turns good to save Davis. Universal-International's knack for turning out superior westerns on modest budgets is entertainingly demonstrated in Wyoming Mail.
by Hal Erickson synopsis