Calificación
Reparto

Bela Lugosi
Boroff

Ralph Byrd
Lt. Terry Kent

Maxine Doyle
Jean Norman

Richard Alexander
Thorg

Lee Ford
Snapper McGee

Herbert Rawlinson
Cmdr. Boyle

John Picorri
G.A. Rackerby [Chs. 2-12]

Allen Connor
Dick Norman

Thomas Carr
Ens. Jim Kent [Ch. 1]

Lawrence Grant
Rabinisi - Boroff's Spokesman at Screening [Ch. 1]

Carleton Young
Henchman Dodds [Ch. 4]

George Chesebro
L.H. Degado - Chief Thug [Ch. 5]

Ranny Weeks
Wies - Ambulance Orderly Thug [Ch. 4]