Geoffrey Beevers reads this exciting novelisation of a classic TV adventure for the Fourth Doctor. The Doctor is suddenly summoned to Gallifrey, the home of the Time Lords, where his ghastly hallucinations of the president’s assassination seem to turn into reality. When the Doctor is arrested for the murder, a hideous, dark, cowled figure is gleefully watching in the shadows. In a battle of minds, the Doctor faces renegade Time Lord the Master inside a nightmare world created by his old enemy’s imagination.

The TARDIS lands in a primeval forest, and the Doctor meets Leela, a warrior banished from her tribe. He learns that an ongoing war between the Sevateem and the Tesh was instigated by Xoanon, the god they both worship. In reality, an all-powerful computer, Xoanon, is possessed by a desperate madness directly related to the Doctor - one which only the Time Lord can rectify! In order to do battle with Xoanon, the Doctor must escape, not only from the savage practices of the Sevateem but also from the mind-controlling impulses of the Tesh.

Everyone knows that Pluto is a barren, airless rock. So naturally the Doctor is surprised when he discovers artificial suns and an ultra-modern industrial city. What’s more, a group of colonists is being worked - and taxed - to death in this inhospitable and supposedly undeveloped part of the Universe.... With the help of his companion Leela and the faithful K9, the Doctor takes on the mysterious and powerful Company, a ruthless exploiter of planets and their people.

Some time ago the White Guardian, one of the most powerful beings in the Cosmos, set the Doctor an urgent task to find and reassemble the six segments of the Key to Time. Having successfully retrieved five of the segments, the Doctor and Romana arrive on the planet Atrios in the middle of an atomic war. There they must search for the last, most vital piece of the Key. However, sinister dangers await them in this final stage of their quest. The actions of the Marshal of Atrios, operating under a mysterious influence, look certain to bring about Armageddon for them all.

On the planet Tigella, the Savants and the Deons are irrevocably opposed on one crucial issue: the Dodecahedron, mysterious source of all their power. To the Savants, it's a miracle of science to be studied and used to benefit all. To the Deons, it's a god, and not to be tampered with. When the power source begins to fluctuate, the whole planet is threatened. Zastor, Tigella's leader, welcomes the Doctor and invites him to arbitrate; yet the Time Lord may not be all he seems.

The evil Master leered at the Doctor, and triumphantly pointed out of the cabin window. The many-tentacled Nestene monster - spearhead of the second Auton invasion of Earth - crouched beside the radio tower! Part crab, part spider, part octopus, its single huge eye blazed with alien intelligence and deadly hatred... Can the Doctor outwit his rival Time Lord, the Master, and save the Earth from the Nestene horror?

In The Time Meddler, the turbulent English coastline in 1066 is the scene of a troubled encounter between the Meddling Monk and the First Doctor, Steven and Vicki. In The Deadly Assassin, the Fourth Doctor returns to Gallifrey and is framed for presidential murder. In Shada, the Fourth Doctor and Romana visit their old friend, the retired Time Lord Professor Chronotis, at Cambridge University. In The Mark of the Rani, the TARDIS lands the Sixth Doctor and Peri in the Industrial Revolution.

Stepping out of the Tardis into Victorian London, Leela and the Doctor are confronted by menacing, diabolical horrors shrouded within the swirling London fog - a man's death cry, an attack by Chinese Tong hatchet men, giant rats roaming the sewers, young women mysteriously disappearing... The hideously deformed Magnus Greel, conducting a desperate search for the lost Time Cabinet, is the instigator of all this evil. Posing as the Chinese god Weng-Chiang, Greel uses the crafty Chang, and the midget manikin Mr Sin to achieve his terrifying objectives.

On the serene planet Deva Loka, an expeditionary force from Earth is dangerously out of control. It's not only the peaceful race of the Kinda who are at risk. A gentle stroll in the lush jungle leads the Doctor and Adric to an unexpected confrontation - and puts them at the mercy of a maniac. But it is Tegan, lulled to sleep by mysterious wind-chimes, who comes closest to a danger than threatens not only her sanity but the existence of the whole planet.

The planet Chloris is very fertile, but metal is in short supply, and has therefore become extremely valuable. A huge creature, with most unusual physical properties, arrives from an alien planet and can provide Chloris with metal from its own unlimited supplies, in exchange for chlorophyll.