Jessica Chastain: 'Zero Dark Thirty' Is 'The Hardest Thing I've Ever Done'

Access Hollywood Season 0 3:45 mins

Jessica Chastain talks with Access about the challenges of playing a character who is "unemotional" and "analytical precise" in "Zero Dark Thirty." Also, she tells Access how she prepared and researched for the role. Plus, Jessica discusses filming an intense torture scene in the beginning of the movie.

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