James Kincaid controls the local water supply and plans to do away with the other ranchers. Government agent Sandy Saunders arrives undercover to investigate Kincaid's land swindle scheme, and win the heart of one of his victims, Fay Denton.
| Actor | Role |
|---|---|
 John WayneSingin' Sandy Saunders | Singin' Sandy Saunders |
 Cecilia ParkerFay Denton | Fay Denton |
 Forrest TaylorJames Kincaid | James Kincaid |
 George 'Gabby' HayesCharlie Denton | Charlie Denton |
 Al St. JohnBert - Henchman | Bert - Henchman |
 Heinie ConklinElmer - Henchman | Elmer - Henchman |
 Earl DwireSlip Morgan | Slip Morgan |
 Lafe McKeeSheriff Bill Baxter | Sheriff Bill Baxter |
| AAddie FosterMrs. Mason | Mrs. Mason |
 Horace B. CarpenterRancher | Rancher |
 Hal PriceTownsman Recognizing Sandy | Townsman Recognizing Sandy |
 Si JenksBather | Bather |
 Yakima Canutt(uncredited) | (uncredited) |