Robert Douglas
— Capt. Markham
Richard Cromwell
— Lt. Bill Armstrong
Hazel Terry
— Pamela Brent
H.B. Warner
— British Consul Brent
Noah Beery
— The Presidente of Bianco
Esme Percy
— Diego de Costa
Frederick Culley
— The Admiral
Henry Victor
— Lt. d'Enriquo
Binkie Stuart
— Jennifer
Julie Suedo
— Juanita (the assassin)
Richard Ainley
— Lieutenant