The Crown's Season 4 Cast Is Packed With A-Listers and Newcomers Alike

The controversial British prime minister is set to appear in the fourth season, which covers the 1980s. Anderson is best known, of course, as geek icon Dana Scully on The X-Files, but her career has spanned successful decades on the screen and stage alike; she's won an Emmy and a Golden Globe (both for The X-Files).