Elenco - The Mystery Squadron
Bob Steele
Fred Cromwell
Guinn "Big Boy" Williams
Bill 'Jellybean' Cook
Lucile Browne
Dorothy Gray
Jack Mulhall
Henry 'Hank' Davis
Purnell Pratt
Lafe Johnson
Robert Frazer
Dr. Flint
J. Carrol Naish
Collins
Bob Kortman
Bracken
Lafe McKee
Stephen Gray
Edward Hearn
Sheriff
Kernan Cripps
Tom
Edward Peil Sr.
Andrew Martin
Jack Mower
Carter
Jack Perrin
Roberts