Rebecca Ferguson's Dune: Part Threerole is a surprising change from the books, but it could set up the franchise's best ending yet. It should be clear from Denis Villeneuve's previous two installments in the Dune franchise that the filmmaker isn't afraid of diverting from the source material. Frank Herbert's novels are vast and prolific, but Villeneuve knows how to make great films, and he's captured the spirit of the books regardless of his accuracy. One of the most recently announced changes is the return of Lady Jessica (Rebecca Ferguson), who isn't in the next novel.

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