 MISC: When John Kent arrives in Paris and goes to the building where  Roberta lives, the doorman tells him that she is on the "troisième  étage " and indicates that John should press the corresponding  button. John is eventually taken to Roberta on the third floor,  which is incorrect since the "troisième étage " corresponds to the  fourth floor. In France, the "premiere étage" (first floor) is not  the ground floor but the next one up.