Irving Cummings Director Herbert Marshall Dr. Stephen Dominik Actor Ruth Chatterton Professor Anna Mathe Actor Simone Simon Marie Claudel Actor Constance Collier Professor Augusta Wimmer Actor J. Edward Bromberg Dr. Spindler Actor Dixie Dunbar Luisa Actor John Qualen Toni Actor Shirley Deane Fritzi Actor Tyrone Power Count Vallais Actor Frank Reicher Dr. Hoffenreich Actor George Hassell Dr. Wilfinger Actor June Storey Greta Actor Christian Rub Forester Actor Lillian West Professor Josephine Penz Actor Symona Boniface Professor Clotilde Federa Actor Gene Markey Screenwriter Raymond Griffith Producer Merritt B. Gerstad Cinematographer Jack Murray Film Editing Hans Peters Art Director Thomas Little Set Decoration Gwen Wakeling Costume Design