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Roy Rogers takes on crooked wartime profiteeers in the musical western Ridin' Down the Canyon. Posing as solid citizens, the crooks spend their evening hours stealing horses from local ranchers, then selling the steeds to the government at exorbitant prices. The head of the bad guys runs a dude ranch where Rogers and his pals (The Sons of the Pioneers) are employed. When Rogers figures out what's what, he sets about to bring the rustlers to justice. There's some piquancy in the fact that the character played by juvenile actor Buzzy Henry is named Bobby Blake; within a few years, the real Bobby Blake (who later grew up to become Robert Blake) would be appearing as Little Beaver in Republic's "Red Ryder" western series.