On the lush planet Tigella, two opposing factions are divided over the usage of the Dodecahedron, an ancient and powerful artefact which provides the entire planet's energy. The Doctor is summoned to arbitrate the conflict, but the power-crazed Meglos intercepts the call and impersonates him in order to steal the Dodecahedron.

On the planet Alzarius in the alternate universe of E-Space, the Doctor, Romana and K9 find survivors of a crashed starliner, strange creatures lurking in the marshes and a genetic riddle which stretches back centuries.

Still trapped in E-Space, the Doctor, Romana, Adric and K9 encounter a medieval civilisation dominated by the Three Who Rule, vampires who govern from their mighty castle.

After an encounter with the Master, an airline stewardess named Tegan Jovanka becomes an unwitting stowaway aboard the TARDIS as it travels to the planet Logopolis. There, the Doctor discovers that the Master's interference with the Logopolitans' advanced mathematics has unleashed a wave of entropy which threatens to consume the entire universe.

Written by Willy Russell, Lies tells the story of a young lad, blessed with enterprise and a dream of living in Cornwall, trying to make something of himself. But, finding himself constantly let down by adults, can he realise that dream?

The Doctor needs somewhere peaceful to recover from his traumatic regeneration. But the sanctuary of Castrovalva is not all it seems, as the Master will stop at nothing to gain his revenge over the Doctor...

Sharm's dog attacks a hostile neighbour, and has to make a decision for which he has no guide lines.

A drama following the romance between Ed, who has a reputation for treating girls badly, and Jenny, who comes to work in the factory canteen, and how they come to realise that they genuinely care for each other and fall in love.

Martin, an ex-public school boy, takes a room above a greengrocer's shop and starts working in the shop. Despite Martin's diligent and successful efforts to save and improve the business, he constantly comes into conflict with Terry, the greengrocer's son, who it turns out is longing to get away from the shop.

Behind the scenes of the documentary series The Trials Of Life showing how some of the footage was captured and interviews with the experts that informed them.