With the departure of John Wayne to more prestigious films, Robert Livingston returned to the role of Stony Brooke in Republic's "Three Mesquiteers" series. In Outlaws of Sonora, Stony and his saddle pals Tucson (Ray Corrigan) and Lullaby (Max Terhune) are hired by a cattleman's association. While transporting his employers' money to the bank, Stony is waylaid by an outlaw who is his exact double (Livingston plays both roles, of course). Keeping our hero under wraps, the villain poses as Stony in hopes of further financial gain. While thus disguised, the false Stony kills a banker, leaving Tucson and Lullaby to wonder if their good pal has gone bad. Eventually everything is straightened out, thanks to the intervention of sharp-witted Dr. Martin (Jack Mulhall). Outlaws of Sonora is one of the best-known "Three Mesquiteers" entries thanks to constant TV exposure and videocassette rentals.