Four Faces West (1948)

Cowboy Ross McEwen arrives in town He asks the banker for a loan of 2000 When the banker asks about securing a loan that large McEwen shows him his sixgun collateral The banker hands over the money in exchange for an IOU signed Jefferson Davis McEwen rides out of town and catches a train but not before being bitten by a rattler On the train a nurse Miss Hollister tends to his wound A posse searches the train but McEwen manages to escape notice However a mysterious Mexican has taken note of the cowboy and that loudmouthed brat is still nosing around Who will be the first to claim the reward for the robbers capture