Ken Maynard
— Ken Maynard
Hoot Gibson
— Hoot Gibson
Bob Steele
— Bob Steele
Myrna Dell
— Ruth Hampton
Ian Keith
— Polini
Ernie Adams
— Warren, the Jewel Cutter
Karl Hackett
— Banker Steve Lynch
Charles King
— Henchman Duke Rollins
Dan White
— Engineer Jim Lockwood
George Chesebro
— Henchman Ace
Charles Murray Jr.
— Ted Hodges (as Chas. Murray Jr.)
John Bridges
— Henchman
Al Ferguson
— Henchman Bates
Bud Osborne
— Henchman
Don Stewart
— Donny Davis