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Hitchcock changed the script shortly before the beginning of filming, and the distributor, Universal, forced an ending that was different from the one that was preferred by Hitchcock. For "Topaz", Hitchcock engaged the 19-year-old French actress Claude Jade from Truffaut's "Stolen Kisses". She and Dany Robin, who was cast as her mother, would provide the glamour in the story. "Jade is a rather quiet young lady," Hitchcock later said, "but I wouldn't guarantee [that] about her behaviour in a taxi."