A little boy named George sends a distress signal to the Doctor when he discovers that monsters live in his bedroom cupboard.

In the desperate search for Melody Pond, the TARDIS crash lands in Thirties Berlin, as the time-travelling drama returns for the second half of the series shown earlier in the year. The Doctor comes face to face with the greatest war criminal in the Universe. And Hitler. Old friendships are tested to their limits as the Doctor suffers the ultimate betrayal and learns a harsh lesson in the cruelest warfare of all. As precious time ebbs away, the Doctor must teach his adversaries that time travel has responsibilities. And he must succeed before an almighty price is paid.

Amy Pond has been kidnapped and the Doctor is raising an army to rescue her as the drama continues. But as he and Rory race across galaxies, calling in long-held debts and solemnly given promises, his enemies are laying a carefully concealed trap.

In her cell in Stormcage, River Song sadly acknowledges that the time has come at last – today will mark the Battle of Demons Run and the Doctor’s darkest hour. Both sides will make their sacrifices and River Song must finally reveal her most closely guarded secret to the Doctor.

As the solar storm rages, Jennifer, a Ganger driven mad by the memories of being “decommissioned”, is seeking revenge, as the time-travelling drama continues.

She can remember every excruciating second of every “execution” and is determined that the humans will pay. And she isn’t just talking war; she’s talking revolution. As the crumbling factory fills with toxic fumes and drips lethal acid, the “Originals” wait desperately for the shuttle from the Mainland to rescue them. But Jennifer has other ideas. Can the Doctor convince the terrified factory workers to embrace their own humanity and work together with their Gangers to overcome a monster of their own making?

The Doctor receives a distress signal from an old friend. Could there really be another living Time Lord out there? Hopes raised, he follows the signal to a junkyard planet sitting upon a mysterious asteroid in a Bubble universe, populated by a very strange family, as the time-travelling drama continues. The Doctor, Amy and Rory are given the warmest of welcomes by Auntie, Uncle and Nephew. But the beautiful and insane Idris greets them in a more unusual fashion – what is she trying to tell the Doctor? As the Doctor investigates, he unwittingly puts his friends in the gravest danger.

A solar tsunami sends the TARDIS hurtling towards a futuristic factory on Earth, where human doppelgangers are used to mine dangerous acid, as the time-travelling adventures continue.

A second wave hits and the “Gangers” separate. They can remember every second of their “original’s” life and feel every emotion they’ve ever experienced. But are these memories stolen or have they been bequeathed? Are the Gangers merely faulty machinery that must be shut down or are they living, breathing, sentient beings? Can the Doctor convince the terrified humans to accept these “almost people” and prevent an all-out civil war before the factory explodes?

The TARDIS is marooned onboard a 17th-century pirate ship whose crew is being attacked by a mysterious and beautiful sea creature. Becalmed and beset by cabin fever, the pirates have numerous superstitious explanations for the Siren’s appearance. The Doctor has other ideas but, as his theories are disproved and every plan of escape is thwarted, he must work to win the trust of the implacable Captain Avery and uncover the truth behind the pirates’ supernatural fears – and he must work quickly, for some of his friends have already fallen under the Siren’s spell…

As the Doctor makes his final journey to the shores of Lake Silencio in Utah, he knows only one thing can keep the universe safe – his own death – in the concluding episode of this series of the time-travelling drama. But has he reckoned without the love of a good woman?

The Doctor’s heart-breaking farewell to Amy and Rory – a race against time through the streets of Manhattan, as New York’s statues come to life around them… With Rory’s life in danger, the Doctor and Amy must locate him before it’s too late! Luckily, an old friend helps them and guides the way.

The Doctor and the Ponds puzzle an unlikely invasion of Earth, as millions of sinister black cubes arrive overnight, almost like presents falling from the sky. But what are they, what’s inside them and most importantly, who sent them? With the international community at a loss, it’s left to the Doctor to unearth who is behind the mystery.