"Game of Thrones" star Maisie Williams concedes it would be "cool" to replace Peter Capaldi as the Doctor, but only if Idris Elba doesn't step into the TARDIS first.

“Yes, it would be cool," the 18-year-old actress told The Evening Standard, "but right now I’m locked into some other things. I think a female Doctor would be incredible."

“I think a black Doctor would be incredible," Williams added. " I’m all for Idris Elba – but if not, I’ll take it for the team and do it!”

Even before executive producer Steven Moffat officially announced his departure from "Doctor Who," star Capaldi had hinted the next season of could be his last as the Time Lord. While there's already been speculation as to who might become the Thirteenth Doctor, it will undoubtedly be quite a while before any announcement is made: Aside from the Christmas special, there won't be any new "Who" episodes this year. Moffat's 12-episode final season will debut in 2017.

Williams is, of course, no stranger to the TARDIS, having already appeared on four episodes of the long-running sci-fi series.