Originally planned as a straight thriller about the work of the World Health Organization; many critics complained, when the film opened, that a potential smallpox epidemic was hardly a fit subject for a Terry-Thomas comedy, and the film was a considerable box-office flop which has been rarely seen since.
The company which built the 'cable car railway' - Simmering-Graz-Pauker of Vienna - receives a credit.
Final film of Julie Alexander.