Night Passage (1957) on Netflix

A fired railroad man is re-hired and trusted to carry a ten thousand dollar payroll in secret, even though he is suspected of being connected to outlaws.

The workers on the railroad haven't been paid in several months, that's because Whitey and his gang, including fast-shooting, dangerous, but likeable Utica Kid, keep holding up the train for its payroll. Grant McLaine, a former railroad employee who was fired in disgrace, is recruited to take the payroll through undercover. A young boy and a shoebox figure into the plot when Whitey's gang tries to hold up the train, and Grant and the Kid meet again to settle an old score.

—A.L.Beneteau <albl@inforamp.net>