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Under the Tonto Rim is a 1947 American Western film directed by Lew Landers and starring Tim Holt, Nan Leslie, and Richard Martin. Written by Norman Houston and based on the 1926 novel Under the Tonto Rim by Zane Grey, the film is about a gang of outlaws who rob a stagecoach and kill one of the drivers. The stagecoach owner goes undercover to learn the identities and location of the gang leaders. The novel had been adapted to film twice before, in 1928 and 1933, under the same title.