The Doctor. Fitz and Compassion arrive on the planet Eskon - a strange world of ice and fire.  Far beneath the planet's burning surface are vast lakes frozen solid by the glacial subterranean temperature.

But the civilised community that relies on the ice reservoirs for its survival has more to worry about than a shortage of water.  The hideous slimers - degenerate mutations in the population - are growing more hostile by the moment, and their fanatical leader will stop at nothing to exact revenge against those in authority.  But what connects the slimers to the unknown horror that lurks deep beneath the ice?  And what is the terrible truth that the city leaders will do anything to conceal?

To unearth the ugliest secrets of Eskon, the TARDIS crew becomes involved in a desperate conflict.  While Fitz is embroiled in the deadly plans of the slimers, the Doctor and Compassion must lead a danger-fraught subterranean expedition to prevent a disaster that could destroy the very essence of Eskon… its cold heart.

There is no such thing as a good night.

You may think you can hide away in dreams.  Safely tucked up in bed, nothing can touch you.

But, as every child knows, there are bad dreams.  And bad dreams are where the monsters are.

The Doctor knows all about monsters.  And he knows that sometimes they can still be there when you wake up.  And when the horror is more than just a memory, there is nowhere to hide.

Even here, today, tonight... in the most ordinary of homes, and against the most ordinary people, the terror will strike.

A young boy will suffer terrifying visions...

...and his family will encounter a deathless horror.

Only the Doctor can help - but first he must uncover the fearsome secret of the Deadstone Memorial.

This is another in the series of adventures for the Eighth Doctor.

The TARDIS lands in the sleepy English village of Marpling, as calm and peaceful as any other village in the 1930s.  Or so it would seem at first glance.  But the village is about to get a rude awakening.

The Doctor and his friends discover they aren't the only time-travellers in the area: a crack commando team is also prowling the Wiltshire countryside, charged with the task of recovering an appallingly dangerous artefact from the far future - and they have orders to destroy the entire area, should anything go wrong.

And there are the wasps... mutant killers bringing terror and death in equal measure.  What is their purpose?  How can they be stopped?  And who will be their next victim?

In the race to stop the horror that has been unleashed, the Doctor must outwit both the temporal hit squad, who want him out of the way, and the local police - who want him for murder.

On the very edge of the galaxy lies Akoshemon: a putrefied world of legendary evil.

In the year 2382 archaeologists land on Akoshemon's only moon, searching for evidence of the planet's infamous past. But when the Doctor, Tegan and Nyssa are drawn into the lunar caverns they find more than a team of academics - and help uncover more than ancient history.

Something is lying in wait, deep inside the labyrinth of caves: something that remembers the spiral of war, pestilence and deprivation that ruined Akoshemon. Something that rejoiced in every kind of horror and destruction.

An age-old terror is about to be reborn. But what is the hideous secret of the Bloodhunter? And why does Nyssa feel that her thoughts are no longer her own? Forced to confront his own worst fears, even the Doctor will be pushed to breaking point - and beyond.

This adventure features the Fifth Doctor, Nyssa and Tegan.

The planets Janus Prime and Menda are diametrically opposed on orbit around a vast Red Giant star.  But while Menda is rich and fertile in the light of the sun, Janus Prime endures everlasting night, its moon causing a permanent solar eclipse.

When the Doctor and Sam arrive on Janus Prime, they find themselves in the middle of a war between rival humans colonising the area.  The planet is littered with ancient ruins, and the Mendans are using a mysterious hyperspatial link left behind by the planet's former inhabitants.  But what is its true purpose?

The Doctor and Sam must piece together a centuries old puzzle.  How can Janus Prime's moon weigh billions of tons more than it should?  Why is the planet riddled with deadly radiation?  As the violence escalates around them, will the time-travelers survive to discover the answer?