Diretor/a
Fred C. Brannon
DIRETOR/A
Elenco (na ordem dos créditos)
Kirk Alyn
Chris Calvert
Jean Dean
Joan Hughes
Anthony Warde
Ricco Morgan
George J. Lewis
Lt. Manuel Agura
Eve Whitney
Nitra
John Merton
John Baroda
Tristram Coffin
Franklyn Lord [Chs. 1, 10]
John Crawford
Sands [Chs. 7-8]
Harold Goodwin
Miller, Power Station Mgr. [Ch. 7]
Dale Van Sickel
Truck Driver Thomas [Ch. 3]
Tom Steele
Henchman Ames [Chs. 1, 3, 10]
Eddie Parker
Dutch [Chs. 1-4]
Forbes Murray
Radar Committee Member 2 [Ch.12]
Frank O'Connor
Radar Committee Member 1 [Ch. 12]
Stephen Gregory
Hugo, Pilot [Chs. 1,5, 12]
Frank Dae
Senator John Clark [Ch. 12]
Arvon Dale
Roadblock Trooper [Ch. 8]
Roy Barcroft
Police Dispatcher [Ch. 3](uncredited)(voice)
John Daheim
Henchman Jackson [Chs. 5, 9-10](uncredited)
Art Dillard
Henchman(uncredited)
Charles Flynn
Finney, Express Depot Clerk [Ch. 6](uncredited)
Bert LeBaron
Nick, Power Unit Heavy [Ch. 11](uncredited)
Carey Loftin
Cave Heavy [Ch. 9-10](uncredited)
David Sharpe
Cliff, Laundry Heavy [Ch. 3](uncredited)
Duke Taylor
Henchman Link [Chs. 2, 11](uncredited)
Ken Terrell
Tami, the Mechanic [Chs. 2, 10](uncredited)
Bud Wolfe
Kraft, Oil Company Office Henchman [Ch. 5](uncredited)