Mark Duplass and More Join Discovery Channel's Unabomber Scripted Series

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Mark Duplass, one-half of Hollywood’s prolific brother acting
and producing team
responsible for Togetherness
and the upcoming HBO series Room 104,
will step back in front of the camera to play David Kaczynski on Discovery
Channel’s upcoming scripted drama, Manifesto.
The actor will portray the younger brother of Ted Kaczynski (Paul Bettany), the
infamous anarchist and domestic terrorist also known as the Unabomber.

Duplass joins a growing ensemble cast, which includes
Bettany, Sam Worthington as FBI agent Jim “Fitz” Fitzgerald, Jane Lynch as
former U.S. Attorney General Janet Reno, Chris Noth as Unabomber Task Force
supervisor Don Ackerman and Keisha Castle-Hughes as Tabby.

ET has also learned that Jeremy Bobb (The Knick), Lynn Collins (X-Men
Origins: Wolverine
), Katja Herbers (The
) and Brían F. O’Byrne (PBS’ Mercy
) will round out the cast. Herbers will play David Kaczynski’s wife,
Linda, while the others will play various FBI agents.

MORE: Inside the Mind of Mark Duplass and How He Plays Hollywood by His Own Rules

Manifesto, which
follows the scripted miniseries Harley
and the Davidsons
quickly has become a highly anticipated project thanks
to its A-list cast and producing team, which includes Kevin Spacey and Dana
Brunetti as executive producers and Lionsgate. The show, which was first announced in March
of last year, will start production in Atlanta on Jan. 30.

Meanwhile, Duplass and his brother Jay are busy with several
HBO projects, including Room 104, an
anthology comedy series that is slated to debut later this year, and Animals, the animated comedy, on which
they serve as executive producers.

Duplass recently promised to ET that Room 104 “is a lot more fun and off the rails than maybe Togetherness was.
This thing is more bananas."