 The opening scene took an entire night to get right, mainly because  the actor playing the customs officer kept blowing his lines. It was  beginning to get light on the horizon when Orson Welles (qv) made  the final take of the night, saying to the cast, "All right, lets  try it one more time." Then he looked at the actor and said, "If you  forget your line this time, just move your lips and well dub it in  later, but please God do NOT say, Im sorry, Mr. Welles!" This is  the take seen in the film.