as Ken Maynard
as Hoot Gibson
as Bob Steele
as Ruth Hampton
as Polini
as Warren, the Jewel Cutter
as Banker Steve Lynch
as Henchman Duke Rollins
as Engineer Jim Lockwood
as Henchman Ace
as Ted Hodges (as Chas. Murray Jr.)
as Henchman
as Henchman Bates
as Henchman
as Donny Davis