When the Zygons return — and they will, later this season, in a two-parter penned by Peter Harness — the story will be a sequel to their last appearance, in the 50th anniversary special, “The Day of the Doctor.”
Called “Invasion of the Zygons” and “Inversion of the Zygons,” the story will take place in Mexico and London.
Peter Capadi shared some teasers about his Doctor’s first run-in with the shape-changers:
“This one’s quite dark. One of the things the show hasn’t done in its current invention is to reflect current events very much but I think this one does. It’s a good thing. You’ll see some fundamentalist arguments – it’s very interesting to play with that.
“We had a great scene: We chased a Zygon around a supermarket. He hid among the pizzas. This is what we do, this how we roll — we get Zygons into a supermarket and chase them.”