Deep Breath (8x01)
A dinosaur materialises in Victorian London and spits out the TARDIS onto the banks of the river Thames, from which emerges the freshly regenerated Twelfth Doctor—suffering from post-regenerative trauma—and Clara Oswald.

They are greeted by the Paternoster Gang, comprised of Silurian Madame Vastra, her human maid and wife Jenny, and Sontaran butler Strax. Vastra instructs the police on how to calm and contain the dinosaur and takes the Doctor and Clara to their residence.

The Doctor awakens to hear the dinosaur's pleas for help. The Doctor then joins Clara and the Paternoster Gang, who have followed him to the river, and learns from Vastra of recent incidents spontaneous combustion. The Doctor jumps into the water to investigate. Clara returns home with the others to start their own investigations, hoping they will cross the Doctor's path.

Into the Dalek (8x02)
The Doctor saves Journey Blue, a rebel fighter, from her space shuttle, which is under attack by Daleks, but is unable to save her brother, who has already perished.

He returns her to the rebel command ship Aristotle. He is greeted by Journey's uncle, Colonel Morgan Blue, who thanks the Doctor for saving his niece, but declares that he must be killed for fear he is a Dalek spy.

However, Journey declares that, as he is a 'doctor', the Doctor can help their patient, which is revealed to be a war-torn Dalek they found floating through space who has appeared to have turned good.

Robot of Sherwood (8x03)
Clara Oswald insists that the Doctor take her to meet Robin Hood, despite the Doctor's claims that Robin Hood is only a legend.

When the TARDIS lands in medieval England, they are met by a man who claims he is Robin Hood. Robin challenges the Doctor to a duel and the Doctor accepts, using a spoon instead of a sword. The Doctor manages to push Robin into a river, only to be pushed in by Robin later. Still, the Doctor remains in disbelief even as Robin takes the two to meet his band of Merry Men.

Clara enjoys her time there and learns that Robin is still looking for his Maid Marian, but the Doctor remains distrustful of Robin and is convinced there is something wrong, particularly with the weather - it is far too green and sunny for the season.

Listen (8x04)
Clara Oswald meets with fellow Coal Hill teacher Danny Pink for their first date. However, things take a turn for the worse when the subject of his time serving in the army comes up, and they each unintentionally offend the other with their lack of understanding.

On her return home, she discovers the Doctor waiting for her, needing her help. He has begun to question whether every living being has a constant companion, using the example of the 'dream' all people have - showing everyone from young children to an elderly woman - in which a hand grabs them from under the bed at night.

Clara initially dismisses this, but agrees to return to her childhood so they can investigate.

Time Heist (8x05)
The TARDIS' phone rings in Clara's apartment, and the Doctor and Clara find themselves in a strange chamber suffering from memory loss along with Psi the augmented human and Saibra the mutant human. They have been recruited by 'The Architect' to rob the Bank of Karabraxos, the most impregnable bank vault in the universe.

The quartet collect the tools required for their heist, before witnessing a mysterious alien named the Teller turn the brain of a criminal to 'soup' with its psychic abilities. Saibra is later caught by the Teller, and activates an atomic disintegrator to avoid the pain of the Teller's brain scan. Psi soon follows when caught by the Teller, and Clara and the Doctor gain access to the vaults of the bank. They gain the rewards of their heist from the vault, and proceed to the Private Vault and unveiling the goal of the heist.

The Caretaker (8x06)
Clara is trying to maintain two separate lives: one as the Doctor's companion, and the other as a school teacher in a romantic relationship with Danny Pink.

The Doctor tells her that he's going deep undercover, disguising himself as a temporary caretaker at her school (Coal Hill). Tracking a Skovox Blitzer, which vaporised a community support officer, CSO Matthew and is one of the deadliest machines created, he plans to displace it a billion years into the future where nothing else can be harmed.

The Doctor meets Danny without realising he's Clara's partner, treating him with disdain because he was a soldier. Suspicious of the Doctor, Danny accidentally tampers with his trap, and the Skovox Blitzer is only sent seventy four hours into the future.

Kill the Moon (8x07)
The Doctor takes Clara and Courtney on a trip, where they arrive in 2049 on a Space Shuttle to the Moon with one hundred nuclear bombs. Noting the Moon's higher gravity and meeting Captain Lundvik, the Doctor questions her, where he's told that her team are on a suicide mission to blow up the Moon.

A sudden mass high tide had threatened humanity's existence, the cause being the Moon. Their mission was the only way to save the planet. An astronaut prepares to prime the bombs, but is attacked by a spider-like creature. Another spider attacks again, and the Doctor realizes that they are only germs. The Doctor determines that the Moon is an egg, with the creature inside ready to hatch.

They call Earth's inhabitants to make the decision, receiving an unanimous vote to save the Earth first...

Mummy on the Orient Express (8x08)
Clara rejoins the Doctor for one last outing before she leaves the TARDIS and the Doctor for good. They arrive on the a train named the Orient Express which travels through space, a distant future remake of the famous train.

 The Doctor soon discovers that an elderly woman has recently been murdered by a creature only she could see - an Egyptian 'Mummy' (known as the Foretold) invisible to all but the one that it is about to kill. Once it is seen, it kills its victim in exactly sixty-six seconds.

The train's computer program, 'Gus', reveals to the Doctor that he has tasked him to capture the Foretold or face the death of innocents.

Flatline (8x09)
On returning Clara to London, the Doctor finds something is draining energy from the TARDIS and they end up in Bristol instead. They find the TARDIS' exterior size has shrunk as a result of the energy drain, and the Doctor sends Clara out to learn more while he tries to stop the drainage.

Clara befriends Rigsy, a graffiti artist now performing community service with a small crew. Rigsy explains several people have gone missing recently, their disappearances memorialized by a mural in a pedestrian tunnel painted by an unknown person. Clara returns to find the TARDIS has shrunk even farther, with the Doctor unable to physically get out. He passes her his sonic screwdriver, psychic paper, and an earpiece to let him communicate with her, and asks her to carry the TARDIS with her as she rejoins Rigsy, taking on the role of "Doctor Oswald" and adopting several of the Doctor's mannerisms.

In the Forest of the Night (8x10)
Maebh, a young girl, is running through a forest when she comes across the TARDIS. She knocks and is answered by the Doctor, who after attempting to take her home, realizes that a forest has grown over London.

Meanwhile in London Museum, Clara and Danny lead a group of kids out into the new forest after a museum sleepover. Clara immediately calls the Doctor, who reveals he is already aware of the forest and tells Clara to meet him in Trafalgar Square as he has found the runaway child from her group.

The Doctor realizes Maebh is behind what's going on, and uses the sonic to get the trees to speak through her. They reveal a solar flare is heading towards Earth which will destroy it and wipe out all life...

Death in Heaven (8x12)
The twelfth and final episode of the eighth series of the British science fiction television programme Doctor Who.

It is the second episode of a two-part story written by Steven Moffat and directed by Rachel Talalay.

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. Can the mighty UNIT contain Missy?

As the Doctor faces his greatest challenge, sacrifices must be made before the day is won.