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Which Game of Thrones Star Is Joining Doctor Who?

See who she's playing!

Robyn Ross

Game of Thrones star Maisie Williams will guest star on BBC America's Doctor Who, the network announced on Monday.

Williams, beat known for her role as Arya Stark on the HBO drama series, will play someone who challenges the Doctor "in very unexpected ways," executive producer Steven Moffat teased. "This time he might just be out of his depth, and we know Maisie is going to give him exactly the right sort of hell." Her role is otherwise being kept under wraps.

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Is Jenna Coleman returning for another season of Doctor Who?

"I'm so excited to be working on Doctor Who as it's such a big and important part of British Culture," Williams said in a statement. "I can't wait to meet the cast and crew and start filming, especially as we'll be shooting not too far from my home town."

Doctor Who returns this fall.

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