11th highest grossing movie of the year in France.
During the pool scene, the music from That Man from Rio (1964), a 1964 movie from the same director, is used.
During the scene in the Foch avenue in Paris, Victor uses the assumed name "de Ferrussac", which is director Philippe de Broca's second family name.
The city of Senlis doesn't actually have a "Musée de Senlis" as portrayed in the movie, nor a triptych by El Greco, but does have a few museums like a hunting with hounds museum, a spahi museum and an art and technology museum.