Season 10

(4 episodes)

UNIT HQ comes under attack by an alien force, and the Doctor has no other option but to call on his own people, the Time Lords, for help. Breaking the first Law of Time, the first two Doctors are lifted out of their time-streams and sent to help the third. But in a universe of anti-matter, an all-powerful figure from Time Lord history is waiting, and even three Doctors may not be enough to stop him...

Written by Bob Baker and Dave Martin

(4 episodes)

It is 1926, and the Doctor and Jo arrive on board the SS Bernice, a small cargo ship peacefully crossing the Indian ocean. Millions of miles away from Earth, on the planet Inter Minor, a travelling showman named Vorg and his assistant, Shirna, arrive to entertain the populous. With them is an amazing machine - an intergalactic peepshow called the Scope. As Vorg's show begins, alien worlds and strange creatures are conjured up from the scope for the watching officials of Inter Minor... On board the SS Bernice, the journey is suddenly interrupted by the appearance of a Plesiosaur, a dinosaur that died out over 130 million years ago. The Doctor and Jo soon realise that things are not quite what they seem, but can they convince their fellow passengers of the danger they are in? Or will they all be made to suffer in the name of 'entertainment'...?

Written by Robert Holmes

(6 episodes)

When the TARDIS accidentally brings the Doctor and Jo aboard Earth cargo ship C982, they find it under attack. The crew perceive the Doctor, Jo and the attackers as Draconians, whose empire currently rivals Earth's for control of the galaxy. But the Doctor and Jo see only Ogrons - brutish, simian mercenaries who steal the cargo, including the TARDIS, and head off into space. The Doctor's investigations take him to Earth, the Moon and then to Draconia itself. He discovers that the Ogrons are employed by his sworn enemy, the Master, who is attempting to provoke a war between the space empires. The Doctor suspects the scale of the plan is too grand for the Master, but even he is shocked to discover the identity of the far deadlier foe waiting in the wings...

Written by Malcolm Hulke

(6 episodes)

Injured after a shoot-out between his old nemesis the Master and the Ogrons, slaves to the evil Daleks, the Doctor sends a message to the Time Lords, asking them to pilot his TARDIS and follow the Daleks to their new base. After he slips into a coma, it falls to his assistant Jo Grant to explore the planet where the TARDIS finally materialises. She meets a party of Thals and is left in hiding aboard their crashed spaceship while they go to the Doctor's aid. On his recovery, the Doctor learns of their mission to destroy a party of Daleks sent here to discover the native Spiridons' secret of invisibility. Not only must the Doctor contend with the Daleks' new scheme, but he must try to stop them unleashing a plague that will exterminate all organic life. When a rescue ship of Thals arrive, they bring with them darker news still - somewhere on Spiridon 12,000 Daleks are waiting to emerge and take what they believe is their rightful place as the Universe's supreme beings!

Written by Terry Nation

(6 episodes)

The Doctor and UNIT are called in to investigate a series of mysterious deaths at a disused mine in South Wales, where all the victims were found with their skin glowing green. As the Doctor becomes suspicious of the nearby Global Chemicals factory and its mysterious ‘Boss’, his assistant, Jo, becomes trapped underground in an abandoned mine infested with deadly giant maggots!

Written by Robert Sloman