Jessica Chastain has joined the cast of the upcoming Apple TV series ‘The Savant.’

The eight-episode limited series is inspired by a true story published in Cosmopolitan in August 2019. Exact plot details for the series are being kept under wraps, but the Cosmopolitan article tells the story of a real woman who has come to be known as “the Savant” as she infiltrates hate groups online to help stop large-scale public attacks.

Melissa James Gibson will serve as writer, executive producer, and showrunner under her overall deal with Fifth Season. Matthew Heineman will direct and executive produce.

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Chastain will executive produce in addition to starring via Freckle Films. Kelly Carmichael of Freckle Films also executive produces along with Jessica Giles, editor-in-chief of Cosmopolitan. Brian Madden, senior VP of development for Hearst Magazines, will produce. Andrea Stanley, writer of the original Cosmopolitan feature, will consult.

Chastain most recently appeared in the limited series ‘George and Tammy’ opposite Michael Shannon, in which they played George Jones and Tammy Wynette.