Knightley Joins Pine in 'Jack Ryan' Reboot

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Keira Knightley has officially joined Chris Pine in Paramount's reboot of Tom Clancy's Jack Ryan franchise, the film's screenwriter, David Koepp, confirms to ETonline.

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This will be the first Jack Ryan film not based on a previous Tom Clancy book as Koepp tells ETonline that the still-untitled film will be an origin story, explaining how Ryan came to join the C.I.A.

The Hollywood Reporter says Knightley will play Ryan's wife in a storyline that finds her life in danger after the Moscow-based Ryan discovers a terrorist plot to collapse America's economy. Kenneth Branagh will direct the prequel and also play the film's villain.

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Jack Ryan has been portrayed by three actors in the past: Alec Baldwin in 1984's The Hunt for Red October, Harrison Ford in 1987's Patriot Games and 1989's Clear and Present Danger and Ben Affleck in 1991's The Sum of All Fears.