Peter Capaldi's already revealed that his Doctor Who regeneration will be "more complicated" than usual – now, series boss Steven Moffat has elaborated on what to expect.
Speaking at the Hay Festival, as featured on BBC Radio 4's Front Row, Moffat hinted that the current series of Doctor Who ends on "quite an unexpected note".
"You all know that the mighty Peter Capaldi will be bowing out, but we're gonna do it slightly differently this time and I've been working with Chris [Chibnall, the next showrunner] about how we do the changeover in a new way," he said.
"I'm not going to tell you what that is. I'm excited by it, I think it's gonna work well. Every regeneration is different, but we are playing it slightly differently this time. I think we've got a good idea."
This year's Christmas special will be both Capaldi and Moffat's final episode, with the latter recently teasing that it's about "redemption", following a series 10 finale that he described as a "bloodbath".
"I kind of do the angst in the series finale," Moffat explained. "You'll see how this pans out when you see the show, but finales are better at 'last falls', and moments of reflection, and anguish, and bloodbaths – which it certainly bloody is!
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"Whereas, Christmas Day isn't a great day to kill off a children's favourite. It can be sad – and it is – but to actually kill off lovely old Doctor Who is not what you want to see on Christmas Day.
"So it will be a tale of redemption, and hope, and deciding to carry on, instead of being a tale of the Doctor falling."
Doctor Who continues this Saturday at 7.15pm on BBC One.
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