In 2020, the most ambitious drilling project in history is under way. Dr Nasreen Chaudry and her team have reached 21 kilometers into the Earth's crust - but something is stirring far below. Amy Pond discovers there's nowhere to run when you can't even trust the ground at your feet.

It is the most important day in the history of Earth: the dawn of a new age of harmony… or the start of its final war. The Doctor must face his most difficult challenge yet and he tries desperately to ensure Alaya's prediction of a massacre does not come true. Meanwhile, what fate will befall the captured Amy and can Tony and his friends be trusted?

In a sun-dappled Sherwood Forest, The Doctor discovers an evil plan from beyond the stars. But with the fate of Nottingham at stake (and possibly Derby), there's no time for the two adventurers to get into a fight about who is real and who isn't - which is probably why they do very little else!

Clara has it all under control: her life at school, her life in space; her new boyfriend and her mad old Time Lord. Everything is humming along just fine, so long as everybody never actually meets. And then, one morning, just before assembly, Coal Hill welcomes a new relief caretaker with a Scottish accent.

When Osgood is kidnapped by a rogue gang of Zygons, the Doctor, Clara and Unit must scatter across the world in a bid to set her free. But will they reach her in time, and can they stop an uprising before it is too late?

With UNIT neutralised, only the Doctor stands in the way of the Zygons.

This terrifying story is assembled from footage discovered in the wreckage of Le Verrier Space Station.

“Space - the final frontier. Final because it wants to kill us.” Trapped on a space station with no oxygen, the Doctor, Bill and Nardole are horrified to discover the automated spacesuits keeping them alive are also trying to kill them!

A long time ago, the ninth legion of the Roman army vanished into the mists of Scotland. Bill has a theory about what happened, and the Doctor has a time machine. But when they arrive in ancient Aberdeenshire, what they find is a far greater threat than any army. In a cairn, on a hillside, is a doorway leading to the end of the world.

In 19th century China, a small coastal village is under threat – from both the fearsome pirate queen Madame Ching and a monstrous alien force which she unwittingly unleashes. Will the Doctor, Yaz and Dan emerge from this swashbuckling battle with the Sea Devils to save the planet?