From Lords of the North to Time Lords: "Game of Thrones" star Maisie Williams is to appear in the new series of "Doctor Who".
The BBC has announced Williams joins Peter Capaldi as The Doctor and Jenna Coleman as companion Clara Oswald in the new series, currently filming in the UK. In an as-yet-unspecified "guest role", Williams' character will "challenge the Doctor in very unexpected ways," according to lead writer and Executive Producer Steven Moffatt. "This time [the Doctor] might just be out of his depth, and we know Maisie is going to give him exactly the right sort of hell."
