Rod Cameron

Rex Bennett

Joan Marsh

Janet Blake

Duncan Renaldo

Capt. Pierre LaSalle

Lionel Royce

Baron von Rommler / Sultan Abou Ben Ali

Kurt Kreuger

Ernst Muller

Frederic Brunn

Wolfe

Sigfrid Tor

Luger

Georges Renavent

Armand

Kurt Katch

Kurt Hauptmann

Ralf Harolde

River Boat Captain

Wilhelm von Brincken

Capt. Boschert

William Yetter Sr.

Submarine Commandant

Hans von Morhart

Submarine First Officer

Frederick Worlock

Sir James Langley

Ed Agresti

French Officer

Spencer Gordon Bennet