Season 6

(5 episodes)

Dulkis: planet of harmony and enlightenment, home to the peaceful Dulcians, an oasis of calm in the cosmos and completely defenseless. The Doctor, Jamie and Zoe arrive to find Dulkis enslaved by the cruel Dominators and their deadly robotic servants, the Quarks. The pacifist Dulcians offer no resistance. Can even the Doctor save a people who are willing collaborators in their own destruction?

Written by Norman Ashby (Mervyn Haisman and Henry Lincoln)

(5 episodes)

Escaping from a volcanic eruption on the planet Dulkis, the Doctor is forced to use the TARDIS's Emergency Unit, which takes the craft out of normal time and space... and out of reality itself! The time-travellers arrive in a mysterious world peopled by fictional characters: Gulliver and Rapunzel, D'Artagnan and Sir Lancelot, but also by creatures from mankind's worst imaginings...

Written by Peter Ling and Derrick Sherwin

(8 episodes)

Investigating the disappearance of an eminent scientist, the Doctor and his companions follow his trail to the London headquarters of International Electromatics, a global supplier of electronic equipment run by the formidable Tobias Vaughan. Teaming up with the newly-formed United Nations Intelligence Taskforce, UNIT, under the command of Brigadier Lethbridge-Stewart, it soon becomes apparent that Vaughan is working to his own sinister agenda. As Cybermen invade in cities all over the world, can the Doctor convince Vaughan to help him defeat their plan for global domination?

Written by Derrick Sherwin (from a story by Kit Pedler)

(4 episodes)

When the TARDIS arrives on the planet of the Gonds, the Doctor, Jamie and Zoe discover a world ruled and enslaved by the Krotons. The brightest Gonds are always chosen to serve as companions of the Krotons and are never seen again. The Doctor and his companions decide to put a stop to their rule, but in doing so, inadvertently unleash the true power and terror of the Krotons instead...

Written by Robert Holmes

(6 episodes)

It is the late 21st century and mankind is totally dependent on T-Mat, a revolutionary form of instant travel. The Doctor, Jamie and Zoe arrive to find that the sinister Ice Warriors plan to invade Earth, using T-Mat to transport deadly seed pods full of a fungus that will absorb the planet's oxygen. The Doctor must race against time to defeat the Martian invaders or condemn the human race to suffocation...

Written by Brian Hayles

(6 episodes)

The Doctor, Jamie and Zoe become victims of piracy when they materialise on a space beacon, minutes before it is blown to pieces. So begins their quest to be reunited with the TARDIS, whilst treading perilously across the paths of the Interstella Space Corps and a gang of murderous bandits. The eccentric prospector Milo Clancey gives the travellers passage in his ageing spaceship, but the old man is himself the focus of Space Corps investigations. Could he possibly be behind the destruction and salvage of so many beacons in the sector? What is the position of Madeleine Issigri, who runs her father's mining corporation on the planet Ta and how might a locked room provide the answer to this mystery? Half the galaxy is spanned in a game of cat and mouse between the law enforcers, led by no-nonsense General Hermack and his V-Ship crew, and the pirates Caven and Dervish, who will apparently stop at nothing to continue their lucrative racket.

Written by Robert Holmes

(10 episodes)

The TARDIS has materialised in a world of trench warfare, barbed wire and poison gas: the Western front, 1917. In the chaos and paranoia of the First World War, the Doctor and his companions are separated from their ship, captured and court-martialled, the death sentence swiftly pronounced. But all is not as it seems. As the Doctor finds himself increasingly out of his depth and facing impossible odds, the only solution is the truly unthinkable. He must seek help from those he most fears: his own people, the Time Lords...

Written by Terrance Dicks and Malcolm Hulke