POLIO BREAKS OUT IN RIO DE JANEIRO, THE SERUM IS IN SANTIAGO AND THERE'S ONLY ONE WAY TO GET THE MEDICINE WHERE IT'S DESPERATELY NEEDED: FLOWN IN BY DARING PILOTS WHO RISK THE TREACHEROUS WEATHER AND FORBIDDING PEAKS OF THE ANDES. STARRING CLARK GABLE, JOHN BARRYMORE, HELEN HAYES, ROBERT MONTGOMERY.