Episode list

Still searching for a way out of E-Space, the TARDIS crew land on an isolated space rock... and immediately find it drawn towards a nearby asteroid. The asteroid has air and gravity unequal to its size and is strewn with the wrecks of spaceships. Veins and pools of rust are everywhere. Stuck on the asteroid away from his friends, Adric discovers that it's a penal colony housing a gang of alien convicts - but resources are low, and they're starting to starve. But escaping the prisoners is only the first part of the traveller's troubles. Because there's a sinister presence at the heart of the asteroid... and it won't release them quite as easily.

The TARDIS lands in an alien tropical rainforest at night where the Doctor, Adric and Romana discover a set of rails stretching through the undergrowth. These tracks carry a long-crashed spaceship that's been converted to run along them like a train. The ship has to keep moving because only the night-side of the world is habitable. The sun on the day-side burns so hot that everything on the surface is turned to ash. But the stress and strain of the constant movement is beginning to take its toll on the ship. Parts are starting to break down, and the relentless heat gets ever closer - but the greatest danger may be on the inside.

Whilst attempting a detailed scan of E-Space, K9 detects the trail of a large spacecraft. Seeking a lead for their escape, the Doctor sets out on its trail towards a misty yellow planet. Arriving just in time to witness a crash-landing in the planet's swamps, the Doctor and his crew discover a number of escaping prisoners fleeing from someone claiming to be a Witchfinder... whilst terrifying 'familiars' float around them. For this is the planet of the witches... and the witches may just know the way home.

The TARDIS crew's attempts to escape E-Space lead them to a strange planet with a surface that shifts and changes constantly. Losing their ship down a fissure, they venture into the depths of this world and encounter the man who rules this place - a man known only as 'the Engineer'. He tells them that he's on a quest for illumination, and to find a rumoured portal in space that may lead to another reality, with knowledge unknown in this universe. It seems he may be on the same quest as the Doctor and his friends. But can he be trusted? And who is he really?

After an accident, the TARDIS lands on a luxury star-liner. Leaving their ship to repair itself, the Doctor, Leela and K9 find themselves facing a great terror: mingling at a cocktail party. Something seems awry behind the pleasantries, however. Guests are going missing, and equipment is breaking down. When the Doctor investigates further he discovers that the star-liner is literally on course for disaster. But no-one seems surprised by this information, still less troubled. What's going on? And can the Doctor and his friends save everyone... when nobody wants to be saved?