Maisie Williams was a guest on Alan Carr Chatty Man last night (Friday) where she briefly discussed her role in Series 9 of Doctor Who.

It has recently been confirmed that the Game of Thrones actress will be appearing in an upcoming episode called The Girl Who Died as a mysterious character “who will challenge the Doctor in unexpected ways”.

“There’s speculation about whether she’s a younger Clara or someone new,” she said. “I’m not going to say which one!”

While she remained tight-lipped about her identity, she did tease that she’s going to “put the Doctor to the test”. She added: “It’s the sort of dynamic that we’ve never seen before.”

Who or what do you think Maisie will be? Share your weird and wonderful theories below…

The Doctor returns in The Magician’s Apprentice… Click HERE for the latest news!