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Doctor Who
Season 10 • Episode 4 • Knock Knock
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Doctor Who Season 10, Episode 4: Knock Knock
Why do floorboards creak? When a sinister landlord shows Bill and her friends the perfect houseshare, they have no idea what lies ahead... knock knock, who's there? Watch Doctor Who Season 10, Episode 4 Knock Knock in HD free online. Enjoy high-quality streaming of Doctor Who Season 10, Episode 4 and share your thoughts in the comments below!
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Episodes
12 episodes
The Pilot
Two worlds collide when the Doctor meets Bill. A chance encounter with a girl with a star in her eye leads to a terrifying chase across time and space. Bill’s mind is opened to a universe that is bigger and more exciting than she could possibly have imagined – but who is the Doctor, and what is his secret mission with Nardole on Earth?
50 min
Smile
The language of the future is emoji! The Doctor takes Bill to a spectacular city on a distant planet - but where are the colonists? A band of 'cute' droids hold the deadly answer.
46 min
Thin Ice
London, 1814. The entire city has turned out for the biggest Frost Fair in decades. But beneath the frozen Thames, revellers are disappearing, snatched through the ice and pulled into the depths where a terrifying monster lurks. Will the Doctor and Bill stop the slaughter before they too are dragged into the icy waters?
44 min
Knock Knock
Why do floorboards creak? When a sinister landlord shows Bill and her friends the perfect houseshare, they have no idea what lies ahead... knock knock, who's there?
45 min
Oxygen
“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!
45 min
Extremis (1)
“The Veritas. The truth. Truth so true you can't live with it. Is that looking into hell... or seeing the light?” Everyone who has ever read the Veritas has been found dead. In a forbidden library at the heart of the Vatican, the pope urges the Doctor to read the ancient text - but can he handle the truth?
49 min
The Pyramid at the End of the World (2)
An “ancient” pyramid appears overnight. Every clock in the world begins counting down to the Earth's destruction. Three opposing armies lie ready to annihilate each other. An alien race stands ready to offer humanity a deal that could save them, but also enslave them. It's a terrifying race against time to save the world. Will the Doctor be forced to accept their help?
47 min
The Lie of the Land (3)
Earth has been invaded and Bill is living alone, an isolated figure surviving in occupied Britain. The Doctor is imprisoned and appears to be on the side of the enemy, flooding the airwaves with fake news. Bill and Nardole must embark on a deadly mission to rescue the Doctor and lead the resistance against the new regime, whatever the cost.
45 min
Empress of Mars
“God save the Queen” has been scrawled on the surface of Mars. What are Victorians doing on the home of the Ice Warriors? And what will they find beneath the Martian soil?
44 min
The Eaters of Light
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.
42 min
World Enough and Time (1)
Friendship drives the Doctor into the rashest decision of his life. Trapped on a giant spaceship, caught in the event horizon of a black hole, he witnesses the death of someone he is pledged to protect. Is there any way he can redeem his mistake? Are events already out of control? For once, time is the Time Lord’s enemy.
46 min
The Doctor Falls (2)
“Without hope, without witness, without reward.” The Mondasian Cybermen are on the rise. It’s time for the Doctor’s final battle…
61 min