Boris Karloff (Gen. Nikolas Pherides)
Ellen Drew (Thea)
Marc Cramer (Oliver Davis)
Alan Napier (Mr. St. Aubyn)
Katherine Emery (Mrs. St. Aubyn)
Jason Robards, Sr. (Albrecht)
Helene Thimig (Kyra)
Erick Hanson (Officer)
Ernst Deutsch (Dr. Drossos)
Sherry Hall (Greek Colonel)
Ernst Dorian (Dr. Drosses)
Skelton Knaggs (Henry Robbins)