Robert Donat (Capt. Terence Stevenson)
Valerie Hobson (Maruschka)
Glynis Johns (Paula Palacek)
Walter Rilia (Inspector Otto Vogel)
Phyllis Morris (Anna Palacek)
David Ward (Actor/Actress)
Victor Weske (Actor/Actress)
Frederick Richter (Nestor)
J. Hubert Leslie (Actor/Actress)
Miki Iveria (Actor/Actress)
Percy Walsh (Dr. Willendorf)
John Penrose (Lt. Krantz)
Martin Miller (Dr. Novothy)
Anthony Eustrel (Officer)
Mabel Terry-Lewis (Mrs. Stevenson)