In a move that brings together two very different fantasy worlds, one of the stars of “Game of Thrones” is heading to “Doctor Who.”

The Huffington Post reports that Maisie Williams is set to do a guest spot on “Doctor Who.”

“BBC America announced Monday that Williams, best known for playing Arya Stark in ‘GoT,’ will appear on the upcoming ninth season of the sci-fi series, which stars Peter Capaldi as the doctor,” the article reports.

In the announcement, Williams said: “I’m so excited to be working on ‘Doctor Who’ as it’s such a big and important part of British Culture. 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.”

Maisie Williams