In New York, with brain-swapping aliens poised to attack, the Doctor and Nardole link up with an investigative reporter and a mysterious masked superhero known only as the Ghost. Can the Doctor save Manhattan? And what will be revealed when we see behind the mask?

The Doctor agrees to tutor Bill, a would be university student, but a strange puddle and the mysterious disappearance of Bill's friend interrupt the tutition. Will the Doctor, Bill and Nardole get to the bottom of things? Will the Doctor gain a new companion? And what IS the Doctor hiding in the vault...? Written by knackeredmum

In the far future, at the edge of the galaxy, there is a gleaming, perfect city. This brand new human settlement is said to hold the secret of human happiness - but the only smiles the Doctor and Bill can find are on a pile of grinning skulls. Something is alive in the walls, and the emojibots are watching from the shadows, as the Doctor and Bill try to unravel a terrifying mystery... Written by Emily reddom

London, 1814. On the frozen Thames, the city celebrates the biggest Frost Fair in decades, but revelers are disappearing beneath the ice, snatched into the depths by a terrifying monster. Can the Doctor and Bill stop it before they are dragged into the icy water?

Bill is moving in with some friends and they've found the perfect house rented by the landlord. The wind blows, the floorboards creak and the Doctor thinks something is very wrong.

The Doctor, Bill and Nardole answer a distress call in deep space, and find themselves trapped on board space station. All but four of the crew have been murdered and the dead are still walking. In a future where oxygen is sold by the breath, and space suits are valued more highly than their occupants, the tardis crew battle for survival against the darkest evil of all.

The Haereticum holds an ancient book known only as The Veritas. Throughout history, anyone who has ever read it has immediately taken their own life. When a new translation is online, spreading danger, the Vatican appeals to the Doctor for help. Will he read The Veritas? But can even the Doctor survive the ultimate truth? Written by Carrie Fong

A 5,000-year-old pyramid appears overnight, baffling everyone including the Doctor.

Earth is invaded and Bill is living alone in occupied Britain. The Doctor appears to be on the side of the enemy, flooding the airwaves with fake news. Bill and Nardole embark on a deadly mission to rescue the Doctor and lead the resistance against the new regime, whatever the cost. Written by BBC UK

The Doctor, Bill and Nardole discover a tomb of the Queen of the Ice Warriors on Mars in 1881.

A long time ago, the Roman legion of the ninth 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.

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.

In the season finale, the Doctor makes a final stand against an army of Cybermen, to protect a tiny band of humans from destruction.

The Doctor, a Time Lord/Lady from the race whose home planet is Gallifrey, travels through time and space in their ship the T.A.R.D.I.S. (an acronym for Time and Relative Dimension In Space) with numerous companions. From time to time The Doctor regenerates into a new form (which is how the series has been running since the departure of the original actor, William Hartnell, in 1966). Written by Chris Wright

The Doctor, a Time Lord/Lady from the race whose home planet is Gallifrey, travels through time and space in their ship the T.A.R.D.I.S. (an acronym for Time and Relative Dimension In Space) with numerous companions. From time to time The Doctor regenerates into a new form (which is how the series has been running since the departure of the original actor, William Hartnell, in 1966). Written by Chris Wright

The Doctor, a Time Lord/Lady from the race whose home planet is Gallifrey, travels through time and space in their ship the T.A.R.D.I.S. (an acronym for Time and Relative Dimension In Space) with numerous companions. From time to time The Doctor regenerates into a new form (which is how the series has been running since the departure of the original actor, William Hartnell, in 1966). Written by Chris Wright

The Doctor, a Time Lord/Lady from the race whose home planet is Gallifrey, travels through time and space in their ship the T.A.R.D.I.S. (an acronym for Time and Relative Dimension In Space) with numerous companions. From time to time The Doctor regenerates into a new form (which is how the series has been running since the departure of the original actor, William Hartnell, in 1966). Written by Chris Wright

The Doctor, a Time Lord/Lady from the race whose home planet is Gallifrey, travels through time and space in their ship the T.A.R.D.I.S. (an acronym for Time and Relative Dimension In Space) with numerous companions. From time to time The Doctor regenerates into a new form (which is how the series has been running since the departure of the original actor, William Hartnell, in 1966). Written by Chris Wright

The Doctor, a Time Lord/Lady from the race whose home planet is Gallifrey, travels through time and space in their ship the T.A.R.D.I.S. (an acronym for Time and Relative Dimension In Space) with numerous companions. From time to time The Doctor regenerates into a new form (which is how the series has been running since the departure of the original actor, William Hartnell, in 1966). Written by Chris Wright

The Doctor, a Time Lord/Lady from the race whose home planet is Gallifrey, travels through time and space in their ship the T.A.R.D.I.S. (an acronym for Time and Relative Dimension In Space) with numerous companions. From time to time The Doctor regenerates into a new form (which is how the series has been running since the departure of the original actor, William Hartnell, in 1966). Written by Chris Wright

The Doctor, a Time Lord/Lady from the race whose home planet is Gallifrey, travels through time and space in their ship the T.A.R.D.I.S. (an acronym for Time and Relative Dimension In Space) with numerous companions. From time to time The Doctor regenerates into a new form (which is how the series has been running since the departure of the original actor, William Hartnell, in 1966). Written by Chris Wright

The Doctor, a Time Lord/Lady from the race whose home planet is Gallifrey, travels through time and space in their ship the T.A.R.D.I.S. (an acronym for Time and Relative Dimension In Space) with numerous companions. From time to time The Doctor regenerates into a new form (which is how the series has been running since the departure of the original actor, William Hartnell, in 1966). Written by Chris Wright

The Doctor, a Time Lord/Lady from the race whose home planet is Gallifrey, travels through time and space in their ship the T.A.R.D.I.S. (an acronym for Time and Relative Dimension In Space) with numerous companions. From time to time The Doctor regenerates into a new form (which is how the series has been running since the departure of the original actor, William Hartnell, in 1966). Written by Chris Wright

The Doctor, a Time Lord/Lady from the race whose home planet is Gallifrey, travels through time and space in their ship the T.A.R.D.I.S. (an acronym for Time and Relative Dimension In Space) with numerous companions. From time to time The Doctor regenerates into a new form (which is how the series has been running since the departure of the original actor, William Hartnell, in 1966). Written by Chris Wright

The Doctor, a Time Lord/Lady from the race whose home planet is Gallifrey, travels through time and space in their ship the T.A.R.D.I.S. (an acronym for Time and Relative Dimension In Space) with numerous companions. From time to time The Doctor regenerates into a new form (which is how the series has been running since the departure of the original actor, William Hartnell, in 1966). Written by Chris Wright

The Doctor, a Time Lord/Lady from the race whose home planet is Gallifrey, travels through time and space in their ship the T.A.R.D.I.S. (an acronym for Time and Relative Dimension In Space) with numerous companions. From time to time The Doctor regenerates into a new form (which is how the series has been running since the departure of the original actor, William Hartnell, in 1966). Written by Chris Wright

The Doctor, a Time Lord/Lady from the race whose home planet is Gallifrey, travels through time and space in his/her ship the TARDIS (an acronym for Time and Relative Dimension In Space) with numerous companions. From time to time he/she regenerates into a new form (which is how the series has been running since the departure of the original actor, William Hartnell, in 1966).