From The Hollywood Reporter:
Emmy winner and Oscar nominee Mare Winninghamis moving under CBS' Dome.
The actress has booked a mysterious role on CBS' sci-fi drama Under the Dome, The Hollywood Reporter has learned.
Winningham will guest star in an episode of the Stephen King adaptation slated to air in late August as Agatha, a seemingly warm woman who is serving as a caretaker for one of the houses under the dome. Agatha welcomes the town's leader Big Jim (Breaking Bad's Dean Norris) into the house, but we soon learn that her intentions are anything but sincere as her ties to Chester's Mill soon surface.
Under the Dome airs Monday nights on CBS.