Lindsay Shonteff Director, Producer Bryant Haliday The Great Vorelli Actor William Sylvester Mark English Actor Yvonne Romain Marianne Horn Actor Sandra Dorne Magda Actor Karel Stepanek Dr. Heller Actor Francis De Wolff Dr. Keisling Actor Nora Nicholson Aunt Eva Actor Alan Gifford Bob Garrett Actor Philip Ray Uncle Walter (uncredited) Actor Pamela Law Woman with Garrett (uncredited) Actor Heidi Erich Grace (uncredited) Actor Anthony Baird Soldier (uncredited) Actor Trixie Dallas Miss Penton (uncredited) Actor Margaret Durnell Countess (uncredited) Actor Ray Landor Expert Twist Dancer (uncredited) Actor Ella Tracey Louisa (uncredited) Actor Guy Deghy Hans (uncredited) Actor David Charlesworth Hugo Novik (uncredited) Actor Lorenza Colville Mercedes (uncredited) Actor Jackie Ramsden Nurse (uncredited) Actor Ronald Kinnoch Screenwriter Charles F. Vetter Screenwriter Kenneth Rive Executive Producer Richard Gordon Executive Producer Gerald A. Fernback Executive Producer Gerald Gibbs Cinematographer Ernest Bullingham Film Editing Stan Shields Art Director