Heroes of the Wild

Heroes of the Wild is a 1927 American Western film serial produced by Nat Levine, directed by Harry S. Webb and released by Mascot Pictures. The film is considered to be lost.
Plot.
A young woman is heir to a large fortune, but the key to finding it is on the leg markings of a horse called "The Ghost of the Gauchos". Unfortunately, the woman's uncle—her legal guardian—has his own plans for her fortune, and they don't include sharing it with her.