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 use three Bond girls: The first should die "preferably in Bond's arms" early, the second a villain whom Bond seduces before she dies in an unusual and gory way midway, and the third survives to the end of the film. In several, the Bond girl is revealed, after her tryst with Bond, to be a villainess. Examples are Fatima Blush (Barbara Carrera) in "Never Say Never Again" (1983), Elektra King (Sophie Marceau) in "The World Is Not Enough" (1999), and Miranda Frost (Rosamund Pike) in "Die Another Day" (2002). As of 2013 there have been only two films in which