Season 10 - Episode Guide

Friend from the Future was a short scene broadcast during Match of the Day and later released online in 2016, which introduced the character of Bill Potts to the world. While this was made before the filming of The Pilot, which introduced Bill to the show proper, some elements were re-used and re-purposed for that episode. In the new scene, Bill and the Doctor are in a Dalek-Movellan war zone, where they have fled to free themselves from some sentient oil, the main antagonist of that story. The story is also technically the first appearance of Heather, as the Dalek shown at the end of this story was later revealed to be the oil in disguise.

The Twelfth Doctor and Bill Potts are running from this Dalek. They hide behind a wall, and Bill repeatedly questions the Doctor as to what a Dalek is. Bill mentions the Daleks' standard weapons and their standard catchphrase. The Doctor tells Bill what a Dalek is. He hurriedly explains to her, then they run away, intent on going back to the TARDIS, convinced that 2017 needs them. However, they are cornered by the Dalek.

As they turn around a text hits the screen that says "Introducing Pearl Mackie as Bill".

The Doctor inadvertently gives a young boy superpowers. Decades later, the Time Lord returns to New York City and finds an alien invasion underway... and only the mysterious superhero known as the Ghost can stop it!

A young woman, Bill, listens to the lectures of a long-time university professor, the Doctor. He soon agrees to tutor her, and Bill realizes that the Doctor is much more than he seems. Bill's mind is opened to a universe that is bigger and more exciting than she could imagine.

For her first proper trip, the Doctor takes Bill to a colony in the future. They discover that the skeleton crew has been wiped out, and a terrible fate awaits the awakening colonists unless they do something.

The Doctor takes Bill to the Great Frost Fair on the Thames in 1814... and they discover that something is living beneath the ice. Something huge, and hungry.

Bill and her mates receive an offer to move into an old house at a price they can't refuse. However, they soon discover that the price is much higher than promised.

The Doctor takes Bill and Nardole to a space station in the future in response to a distress call. They discover that 36 of the 40 crew members are dead... but their suits aren't.

The Pope asks the Doctor to investigate the mysteries of Veritas, a book that has caused everyone to read it to commit suicide. However, the Doctor soon learns that Veritas contains the real history of the universe… and it is enough to drive anyone to suicide.

The Monks materialize a 5,000-year-old pyramid as a threat, and then demand the consent of Earth's leaders to save the planet from imminent destruction.

Bill finds herself in a world that is ruled by the Monks, and has always believed that the Monks have been there to guide humanity and defend it. Worse, the Doctor is working with the Monks to solidify their rule.

The Doctor and Bill end up stranded on Mars investigating how a 19th century message appeared on the 21st century Mars. They find Victorian soldiers... invading an ancient Ice Warrior hive.

The Doctor, Bill, and Nardole travel to Scotland in the distant past to learn what happened to the Ninth Legion. They soon discover an alien creature stalking the woods, and the gate that must remain guarded no matter what.

The Doctor decides to test Missy's reformation with a mission to investigate a distress signal coming from a 400-mile-long ship near a black hole. However, things soon take a turn for the worst and an old friend returns with new allies.

The Doctor rescues Bill, but warns her that there's no going back to the way things were. Meanwhile, the Cybermen prepare to invade another floor of the spaceship, and Missy must choose sides.

The Twelfth Doctor refuses to regenerate... and finds himself at the South Pole, confronting his first incarnation as he also refuses to regenerate. Together they confront a British Captain displaced from World War I and the mysterious Testimony.

Archive footage and interviews looking back at Peter Capaldi's era as the Twelfth Doctor; Steven Moffat reflecting upon his time as a writer and then later as Executive Producer, revealing his favorite episodes.