The Doctor has 30 minutes to find Clara, who is lost within the crashed TARDIS.

Bodies with waxy, glowing, red skin are found in Victorian Yorkshire.

An amusement park, Hedgewick's World of Wonders, becomes the location of a deadly silver resurrection.

The Doctor's greatest secret is discovered.

The Doctor makes sacrifices to save a town called Christmas.

A sacrifice will be demanded during the Festival of Offerings on the planet Akhaten.

The Doctor and Clara land on a submarine in 1983 as it spirals into the depths of the ocean with a loose alien creature on board.

Missing from the BBC archives, this animated version of the 1967 classic sees the Doctor and Jamie being kidnapped and taken to 1866; there, he finds the Daleks are going to use him as part of a plot to create a race of Super-Daleks.

While in Victorian-era London investigating oddities such as spontaneous combustions and a dinosaur in the Thames, Clara struggles to know the man the Doctor has become.

The Doctor and Clara are captured by Vikings, then must help protect their village from futuristic space warriors.

While stalking London streets, a deadly highwayman called "The Knightmare" and his sidekick find unearthly loot, and must face The Doctor.

Trapped in a world unlike any other he has seen, the Doctor faces the greatest challenge of his many lives; pursued by the fearsome creature known only as the Veil, he must attempt the impossible; if he makes it through, Gallifrey is waiting.

Returning to Gallifrey, the Doctor faces the Time Lords in a struggle that takes him to the end of time itself.

The Doctor, Yaz, Graham and Ryan find their way back to Yorkshire and Yaz's family. only to find something is stirring amidst the eight-legged arachnid population of Sheffield.

The Doctor, Ryan, Graham and Yaz arrive in 17th-century Lancashire and become embroiled in a witch trial, run by the local landowner; as fear stalks the land, the arrival of King James I only serves to intensify the witch hunt.

On the edge of a Norwegian fjord, in the present day, The Doctor, Ryan, Graham and Yaz discover a boarded-up cottage and a girl named Hanne in need of their help.

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.

A mysterious woman who can't even remember her own name, falls from the sky.

The Doctor hopes mathematicians on planet Logopolis can reconfigure the outer shell of the TARDIS.

Still reeling from their first encounter, the Doctor and her new friends fight to stay alive long enough, in a hostile alien environment, to solve the mystery of Desolation; the mystery of Angstrom and Epzo.

The Thals are a race of perfect beings.

The Doctor and her friends find themselves in the Deep South of America when they arrive in Montgomery, Ala., in 1955; as they encounter a seamstress by the name of Rosa Parks, they begin to wonder if someone is attempting to change history.

The evil Daleks survive in metal casings.

The Doctor and her friends arrive in the Punjab, India, in 1947, as the country is being torn apart; while Yaz attempts to discover her grandmother's hidden history, the Doctor discovers demons haunting the land.

As the New Year begins, a terrifying evil is stirring, from across the centuries of Earth's history; as the Doctor, Ryan, Graham and Yaz return home, they must try to overcome the threat to the planet.

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

While the Doctor is locked away in an alien prison, Yaz, Ryan and Graham discover a disturbing plan involving the Daleks.

When people start to disappear, a young woman finds cryptic messages bleeding through from a mysterious stranger called the Doctor.

The Doctor is trapped, powerless and terrified, on the planet Midnight, as a knocking on the wall begins.

The planet of Tara holds the fourth segment of the Key as a statue, and the Doctor becomes involved in the feud that exists between Count Grendel and Prince Reynart.

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.