Bela Lugosi (Anton Lorenzen)
Shirley Grey (Sarah Briggs)
Arthur Margetson (Capt. Briggs)
Edmund Willard (Toby Bilson)
George Mozart (Tommy Duggan)
Graham [Ben] Soutten (Jack Samson)
Herbert Cameron (Volkerk Grot)
James Carew (James Winchester)
Terence de Marney (Charlie Kaye)
Bruce Gordon (Olly Deveau)
Johnnie Schofield (Peter Tooley)
Edgar Pierce (Arlan Harbens)
Charles Mortimer (Attorney General)
Alec Fraser (Cmdr. Mohon)
Gunner Moir (Ponta Katz)
Monte de Lyle (Portunato)
Ben Welden (Boas Hoffman)
Dennis Hoey (Tom Goodschard)
Gibson Gowland (Andy Gillings)
Clifford McLaglen (Capt. Morehead)