James Mason (Alan Thurston)
Carla Lehmann (Susan Foster)
Raymond Lovell (Von Alven)
Enid Stamp Taylor (Maritza)
Walter Rilia (Dr. Muller)
Cecile Chevreau (Nun)
Paul Sheridan (Plainclothes Detective)
Albert Whelan (Kadour)
Cot D'Ordan (Hotel Manager)
Harold Berens (Toni)
Jacques Metadier (Actor/Actress)
Pamela Stirling (Yvette)
John Slater (American Officer)
Sybilla Binder (Woman)
Paul Bonifas (Owner)
Richard George (Skipper)
Hella Kurty (Maid)
Meinhart Maur (Schulz)
Richard Molinas (Actor/Actress)
Macdonald Parke (American)
Lea Seidl (Sister)
Graham Penley (Actor/Actress)
Leslie E. Bradley (Henri de Lange)
Michael Morel (Commissioner)
Bart Norman (Gen. Mark Clark)