Bela Lugosi
Boroff
Acting
Ralph Byrd
Lt. Terry Kent
Acting
Maxine Doyle
Jean Norman
Acting
Richard Alexander
Thorg
Acting
Lee Ford
Snapper McGee
Acting
Herbert Rawlinson
Cmdr. Boyle
Acting
John Picorri
G.A. Rackerby [Chs. 2-12]
Acting
Allen Connor
Dick Norman
Acting
Thomas Carr
Ens. Jim Kent [Ch. 1]
Directing
Lawrence Grant
Rabinisi - Boroff's Spokesman at Screening [Ch. 1]
Acting
Carleton Young
Henchman Dodds [Ch. 4]
Acting
George Chesebro
L.H. Degado - Chief Thug [Ch. 5]
Acting
Ranny Weeks
Wies - Ambulance Orderly Thug [Ch. 4]
Acting