The Newsroom actress will play Julie, who — along with Goran Visnjic’s John — is behind the creation of robot prototypes like Ethan, the son of John and Molly (played by Halle Berry).
Extant is a mystery thriller that follows Molly, an astronaut trying to settle back into her home life after a year-long solo mission. Ultimately, her experiences in both space and at home will lead to events that change the course of history.
In addition to playing Jim’s Vassar-obsessed love interest on The Newsroom, Gummer’s resumé includes roles on American Horror Story: Coven, Zero Hour and Smash.
Extant, from CBS Television Studios and Steven Spielberg’s Amblin Entertainment, is scheduled to bow Wednesday, July 2, at 9/8c.