The Walking Dead alum Sarah Wayne Callies has signed on to star in the USA Network pilot Colony alongside Josh Holloway.

The show centers on how life in Los Angeles has changed after an alien invasion occurs. Josh Holloway is playing former FBI agent Will Bowman, who reluctantly joins forces with the occupying alien government to get rid of a strong resistance group within their colony, so he can protect his family. Sarah Wayne Callies is playing Will's wife, Katie Bowman, who struggles to keep her three children safe in the new alien-occupied L.A.

Carlton Cuse (Lost, Bates Motel) is co-writing the pilot script alongside Ryan Condal (Hercules). Legendary Television and Universal Cable Productions are producing the series for USA Network. No production schedule was given for the pilot episode.

Sarah Wayne Callies is best known for playing Dr. Sara Tancredi on Fox's Prison Break and Lori Grimes on AMC's The Walking Dead. On the big screen, she most recently starred in Into the Storm, and she is currently shooting Pay the Ghost alongside Nicolas Cage.