Doctor Who showrunner Russell T Davies has given some clues about the backstory of new companion Ruby Sunday (Millie Gibson).
The character will make her debut in this year's Christmas episode - titled 'The Church on Ruby Road' - alongside Ncuti Gatwa's Fifteenth Doctor.
Davina McCall, host of ITV's Long Lost Family, will be appearing in the episode as herself - and Davies has confirmed that the presenter will be involved as part of Ruby's attempts to learn more about her past.
"[The Christmas episode] is unashamedly the story of Ruby. It's called 'The Church on Ruby Road' because that's where the church is where Ruby is left as a baby in 2004," he told SFX.
"So, she's named after that church. She's a foundling, so no-one knows who her mother or father is. She was named after the church on Ruby Road, which does carry over into the series itself.
"Not every question is answered in the Christmas special, and that continues all the way through [the next series] to the most magnificent finale ever shot on planet Earth. No hype! I swear that's true."
Doctor Who airs at 5.55pm on Christmas Day on BBC One in the UK and Ireland, and streams via Disney+ in the rest of the world.
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