The Doctor and Clara save the frightened crew from a threat in an underwater base, but the Doctor questions the haunting.

Trapped and alone in a terrifying Dalek city, the Doctor is at the heart of an evil Empire; no sonic, no TARDIS, nobody to help. With his greatest temptation before him, can the Doctor resist? And will there be mercy?

Where is the Doctor? When the skies of Earth are frozen by a mysterious alien force, Clara needs her friend. But where is the Doctor, and what is he hiding from? As past deeds come back to haunt him, old enemies will come face-to-face, and for the Doctor and Clara survival seems impossible.

With Cybermen on the streets of London, old friends unite against old enemies and the Doctor takes to the air in a startling new role. As the Doctor faces his greatest challenge, sacrifices must be made before the day is won.

In the mysterious world of the Nethersphere, plans have been drawn. Old friends and old enemies manoeuvre around The Doctor, and an impossible choice is looming over him.

One morning in London, and every city and town in the world, the human race wakes up to the most surprising invasion yet: the trees have moved back in. Everywhere, in every land, a forest has grown overnight and taken back the Earth.

Separated from The Doctor, Clara discovers a new menace from another dimension. But how do you hide when even the walls are no protection.

Aboard the most beautiful train in history, speeding among the stars of the future, a legend is stalking the passengers. Once you see the Mummy, you have 66 seconds to live. Clara sees The Doctor at his deadliest and most ruthless – and finally she realises she’s made the right decision. Because this is their last adventure: it’s time to say goodbye to the Time Lord.

In the near future, The Doctor and Clara arrive on a decrepit shuttle making a suicide mission to the Moon. Crashing on the lunar surface, they find a mining base full of eviscerated corpses, spider-like creatures scuttling about in the dark, and a terrible dilemma.

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.