The BBC has today (Monday) confirmed that Maisie Williams will be guest starring in Series 9 of Doctor Who.

The Game of Thrones star will play a mysterious character who “is going to challenge the Doctor in very unexpected ways” when he returns to our screens this autumn.

The actress has started filming in Cardiff today as production begins on two period adventures, The Girl Who Died by Jamie Mathieson and Steven Moffat, and The Woman Who Lived by Catherine Tregenna.

The stories are being directed by Ed Bazalgette whose most recent work includes Poldark.

“I’m so excited to be working on Doctor Who as it’s such a big and important part of British culture,” Maisie has commented. “I can’t wait to meet the cast and crew and start filming.”

Steven Moffat added: “We’re thrilled to have Maisie Williams joining us on Doctor Who. It’s not possible to say too much about who or what she’s playing but this time the Doctor may just be out of his depth. We know Maisie is going to give him exactly the right sort of hell.”

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