Roy Rogers, Smiley Burnette and the Sons of the Pioneers go undercover to help Texas Governor Russell Hicks stop World War II Axis sympathizers from blowing up U.S. warehouses.
Roy Rogers
Peggy Moran
Smiley Burnette
Dorothea Kent
Gerald Mohr
James Bush
Lloyd Corrigan
Russell Hicks
Bob Nolan
Pat Brady
Karl Farr
Lloyd Perryman
Tim Spencer
Hugh Farr
Irving Bacon
Stuart Hamblen
Norman Willis
Harry Burns
Richard Alexander
Hank Bell
Ray Bennett
Lynton Brent
Roy Bucko
Bob Burns
Yakima Canutt
Victor Cox
Eddie Dean
Eddie Dew
Art Dillard
John Dilson
Edward Earle
Bud Geary
William Gould
Harrison Greene
Herbert Heyes
Earle Hodgins
Reed Howes
Elmer Jerome
Kate Drain Lawson
Fred Johnson
Jack Kirk
Rex Lease
Ted Mapes
Frankie Marvin
Art Mix
Bert Moorhouse
Jack O'Shea
Cliff Parkinson
Edward Peil Sr.
Ralph Peters
Herbert Rawlinson
Jack Ray
Dick Rich
Tom Smith
Rudy Sooter
Hugh Sothern
Charles Sullivan
Forrest Taylor
Trigger
Emmett Vogan
Dick Wessel
Harry Willingham
Bill Wolfe