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Cary Grant had announced his retirement from acting in February 1953, stating that, since the rise of Method actors like Marlon Brando, most people were no longer interested in seeing him. He was also angry at the way Sir Charles Chaplin had been treated by the HUAC. He was lured out of his retirement to make this movie, and thereafter continued acting for a further eleven years.

John says he'll leave his clothes with Danielle, but later, when he is at the flower market, he's in the same clothes.

However it is quite likely that he met up with her before going to the market and this meeting was simply omitted as it contributes nothing else to the story. This is the only plausible explanation, since he was unlikely to be concealing money in his swimming trunks either, and it's improbable that he walked the 20 miles from Cannes to Nice for the meeting, barefoot in just his trunks.

The opening title sequence shows the window of a travel agent, with the text of the titles superimposed. The bottom of the window is not quite horizontal because the window is seen from a slight angle to perpendicular. The text of the titles is given slight parallelogram distortion so the bottom line of text is parallel to the window-sill, and therefore it is not horizontal and parallel with the film frame.

Edited into Histoire(s) du cinéma: Seul le cinéma (1994)