Motifs in the James Bond film series the degree to which Bond girls are pivotal to propelling the plot forward varies from one film to the next. Five of the Bond girls are "bad" girls (or at least working for the villain) who turn "good" (or switch sides) usually due to Bond's influence. Bond has fallen in love with only Tracy di Vicenzo in "On Her Majesty's Secret Service" and Vesper Lynd in "Casino Royale", but both of them die at or near the end of the respective films. Roald Dahl, a screenwriter of "You Only Live Twice", said he was given a formula to work to
Bond girl year instead. French actress Claudine Auger was ultimately cast in the role. "Thunderball" launched Auger into a successful European film career but did little for her in the United States. At one time it was said that appearing as a Bond girl would damage an actress's career. Lois Chiles is often cited as a case in point, even though her career did not suffer because of her portrayal of Holly Goodhead, but rather because, after she lost her younger brother to non-Hodgkin lymphoma, she decided to take a three-year break from acting, from which her career never recovered. Casting for