He’ll play Tanner Bolt, the celebrity defense lawyer hired to represent Nick (Ben Affleck)/ Meanwhile, Kim Dickens and Patrick Fugit have been hired to play the detectives, and Carrie Coon will be Nick’s twin sister, Margo. Still no word on the girlfriend, which means it is not too late to hire Becky from Friday Night Lights. (Do you think David Fincher has seen Friday Night Lights? Discuss.)