Two worlds collide when the Doctor meets Bill, and a chance encounter with a girl with a star in her eye leads to a terrifying chase across time and space.

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.

London, 1814. The entire city has turned out for the biggest Frost Fair in decades. But beneath the frozen Thames, revellers are disappearing.

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?

'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!

Everyone who has ever read the Veritas has been found dead. In a library at the heart of the Vatican, the pope urges the Doctor to read the ancient text.

When the Earth is set on a countdown to destruction, an alien race offers a deal to save humanity. Will the Doctor accept their help?

With the Doctor imprisoned, Bill and Nardole must embark on a deadly mission to rescue him and lead the resistance against the new regime.

'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?

A hunt for the lost Ninth Roman Legion leads the Doctor, Bill and Nardole into the middle of an ancient battle that could cast humanity into the dark forever. What is inside the cairn? And how far will they have to go defeat the terrifying alien Eaters of Light?

A huge spaceship trapped in the gravity well of a black hole, teeming with impossible lifeforms, harbours one of the Doctor's most feared enemies... Mondasian Cybermen.

The Doctor makes a final stand against an army of Cybermen to protect a tiny band of humans from destruction.