Lionel Jeffries, Anna Quayle, Monti DeLyle, and Bernard Spear would all again appear in the movie Chitty Chitty Bang Bang (1968).
When reciting the list of false surnames he had used in the past, Nick (Tony Curtis) tacks on that he's been known to go by 'Schwartz', but only "when the situation calls for it." In reality, Mr. Curtis' given name was 'Bernard Schwartz'.
The first draft of the screenplay was written by Francis Ford Coppola. However, none of it was used for the movie finally made some years later.
When Fenella and Nick were riding together she was singing an English folk song called "Strawberry Fair".
Yole Marinelli's debut.