After Scobie punches a hole in Mrs. Lampert's door, the hotel worker pins a patch on the outside of the door. Such a patch would be more secure placed on the inside of the door.
Jean-Louis Gaudet:
Oh, la!
Reggie Lampert:
Don't tell me, you didn't know it was loaded. Sylvie! Oh. Can't he do something constructive, like start an avalanche or something?
During the night boat scene, the boat passes under a wide bridge, but the lighting on the characters is unaffected, revealing a rear projection special effect.
When first released, Hepburn's line "at any moment we could be assassinated" was dubbed over to become "at any moment we could be eliminated" due to the Kennedy assassination. Subsequent releases have "assassinated" restored to its place in the film.
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