Zanuck had a long history of trying to turn his European mistresses into film starshe had previously done this with Bella Darvi, Juliette Gréco and Irina Demick.Buchwald, Art (1962-07-14). "Zanuck Vs. Greco: Four-Year Friendship Egomania Ambitious Girls". The Washington Post and Times-Herald. p. D31 Gilles' only movie, as the lead in Hello Goodbye (1970), was created and written by Zanuck, and was the first production he personally supervised since he inserted Demick in The Longest Day (1962).Blume, Mary (1969-12-07). "Darryl F. Zanuck in Paris---the Last Film Tycoon". Los Angeles Times. p. c36
