Season 8

(4 episodes)

The Master arrives on Earth in his TARDIS, camouflaging it as a horse box at a circus. He immediately contacts the Nestenes and assists them in mounting a second invasion of Earth. The Doctor and his new assistant, Jo Grant, have to tackle the Autons, the Master and a large number of deadly daffodils.

Written by Robert Holmes

(6 episodes)

Professor Keller has created a machine that can pacify even the most dangerous of criminals. But when the Doctor and Jo arrive at Stangmoor Prison for a demonstration, things start to go horribly wrong, especially when they discover that the Doctor’s old enemy the Master is responsible for the machine. What could he possibly want from the criminals? And what connects him with an impending World Peace Conference?

Written by Don Houghton

(4 episodes)

A mysterious object approaches Earth, alerting the Doctor and UNIT that they face another possible threat from outer space. Are the gold-skinned aliens who claim to bring great gifts to humanity as peaceful and benevolent as they first appear? And why is the Doctor's arch-enemy the Master on board their spaceship...?

Written by Bob Baker and Dave Martin

(6 episodes)

The Time Lords discover that the Master has stolen secret information about a device called the Doomsday Weapon and realise they need the exiled Doctor's help. They send the TARDIS, along with the Doctor and his assistant Jo Grant, to the bleak planet Uxarieus in the middle of the 25th Century where all is not well. What is attacking the colonists and can the Doctor stop his old enemy from finding the dangerous weapon before it is too late?

Written by Malcolm Hulke

(5 episodes)

In the peaceful village of Devil's End something very strange is happening. A professor is preparing to open a nearby burial mound and a local white witch has foreseen death and disaster. Meanwhile, the new vicar looks suspiciously like the Master and he is using black magic to conjure up an ancient Dæmon. Can the Doctor, Jo and UNIT stop their old enemy before he succeeds?

Written by Guy Leopold (Robert Sloman and Barry Letts)