Lilli Palmer
— Baroness Edith de Kekesfalva
Albert Lieven
— Lt. Anton Marek
Cedric Hardwicke
— Dr. Albert Condor
Gladys Cooper
— Mrs. Klara Condor
Linden Travers
— Ilona Domansky
Ernest Thesiger
— Baron Emil de Kekesfalva
Emrys Jones
— Lt. Joszi Molnar
Ralph Truman
— Maj. Sandor Balinkay
Fritz Wendhausen
— Josef
John Salew
— Col. Franz Bubencic
Freda Jackson
— Gypsy
Gerhard Kempinski
— Mayor Jan Nivak
David Ward
— Capt. Ferencz Herczeg
Anthony Dawson
— Lt. Blannik
Peter Cotes
— Kosma (Orderly)
Ronald Millar
— Tabor
Kenneth Warrington
— Archduke Franz Ferdinand of Austria
Jenny Laird
— Trudi
Hannah Norbert
— Frantiska
Gordon Phillott
— Franto
Charles Deane
— Bridegroom
Vivien James
— Bride
Vida Hope
— Mrs. Tausky (uncredited)