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An episode of Doctor Who was recommended to Petronella Osgood under "More episodes" when she watched The Zygon Invasion on BBC iPlayer on 10 May 2020.
- You may be looking for the real world television story.
It featured what appeared to be a Cyberman. (WC: The Zygon Isolation)
Behind the scenes
Although it was unnamed in WC: The Zygon Isolation, it was named "The Timeless Children" in the real world.
Important note
This is a in-universe counterpart of the real world Doctor Who television story The Timeless Children that exists within the Doctor's universe. It was a visual meta-fictional cameo in The Zygon Isolation, where Petronella Osgood and her Zygon duplicate decide to watch The Zygon Invasion on BBC iPlayer.