The White Guardian gives the Doctor a quest to find the six disguised segments of the Key to Time which, when assembled, will be used to restore the balance of the cosmos. To aid him he is given a new companion, a female Time Lord called Romana, and a tracer device.

On the set of "EastEnders", a celebration of the history of film, music, theatre and television; the team appraise rare and unusual items of entertainment memorabilia, including a script for the first episode of "Doctor Who."

On the set of "EastEnders", a celebration of the history of film, music, theatre and television; the team appraise rare and unusual items of entertainment memorabilia, including a script for the first episode of "Doctor Who."

The Doctor, refusing to face regeneration, teams up with his former self, a British army captain, and Bill Potts for an adventure.

When intelligence agents around the world come under attack from alien forces, MI6 turns to the Doctor; as the Doctor, Graham, Yaz and Ryan travel the globe looking for answers, attacks come from all sides.

In another dimension, and across the centuries, a terrifying plan to destroy humanity is about to reach fruition; the Doctor and her friends must escape multiple traps to defeat a deadly alliance.

The Doctor and her companions discover the luxury resort where they are staying is hiding a number of deadly secrets; they must discover why there are ferocious monsters attacking Tranquillity Spa.

The year is 1903; on the edge of Niagara Falls, Nikola Tesla's generator plant is behaving strangely; something is sabotaging the maverick inventor's work.

The Judoon, trigger-happy space police, are targeting 21st-century Gloucester; the Doctor, Yaz, Ryan, and Graham race back to Earth to prevent them from doing too much damage to the cathedral city.

The Doctor, Yaz, Ryan, and Graham split up to investigate a missing astronaut in the Indian Ocean, birds behaving strangely in Peru and a U.S. naval officer who washes up on a Madagascan beach.

From ancient Syria, to present day Sheffield and out into the wilds of space, something is stalking the Doctor and her friends; as Graham, Yaz and Ryan return home to see friends and family, they find themselves haunted by very different experiences.

In 1816, the Doctor and gang arrive at a villa near Lake Geneva in Switzerland; they plan to soak up the atmosphere as Lord Byron and the Shelleys prepare for a night telling ghost stories, but the villa proves to have ghostly presences all its own.

In the far future, the Doctor and her friends face a brutal battle across the farthest reaches of space to protect the last of the human race against the deadly Cybermen.

The Cybermen are on the march; as the last remaining humans are ruthlessly hunted down, Graham, Ryan and Yaz face a terrifying fight for survival.

On the set of "EastEnders", a celebration of the history of film, music, theatre and television; the team appraise rare and unusual items of entertainment memorabilia, including a script for the first episode of "Doctor Who."