Corrected entry: The man at the night club that begins the "no hands" game speaks in French and then translates to English. At one point he counts "one, two, three" but speaks in Italian this time: "uno, due, tre."
Corrected entry: The whole plot turns on the police not finding $250,000 with the dead man on the train. We find out that that money came from an auction of all the materials in the Paris apartment. But then very shortly it turns out that there is another $250,000 that all the former spies are looking for, the $250,000 they stole during the war as spies. Eventually, that money "turns up" as the stamps. But no one ever seems to be concerned about the other $250,000 from the apartment auction. It seems that it was introduced only so that the $250,000 number could surface in the dialogue, then was conveniently forgotten. Where the hell did that money go?
Correction: Charles Lambert gets the money after the war and uses it to support his lavish lifestyle (the apartment on the Avenue Velasquez in Paris). While Reggie is on the ski holiday with Sylvie and Jean-Louis, Charles auctions all his belongings and converts the money into something he can easily carry with him to Venezuela (the three valuable stamps). It's all the same money - $250,000 from the war which went into his apartment and belongings is the money he used to buy the valuable stamps.
Corrected entry: Audrey is eating at an outdoor restaurant on the ski fields. A very annoying child, wearing black gloves, aims a water pistol shaped like a gun at Audrey; before he shoots, the gun is in his right hand, but when he does shoot, the gun is now in his left hand.
Correction: If you go through the scene and pause it, you'll see that the toy gun is in the boy's left hand the whole time. The gun is pointing to the right and you can see the boy's fingers curved around the handle and trigger the whole time.
Corrected entry: The lights on the Seine tour boat go out, but in the long shot they are still working.
Correction: IMDb copy and paste.
Correction: No reason why he can't be tri-lingual.