The hugely powerful Key to Time has been split into six segments, all of which have been disguised and hidden throughout time and space. Now the even more powerful White Guardian wants the Doctor to find the pieces. With the first segment successfully retrieved, the Doctor, Romana and K9 trace the second segment of the Key to the planet Calufrax. But when they arrive at exactly the right point in space, they find themselves on exactly the wrong planet - Zanak.

In search of a segment of the Key of Time, the Doctor, Romana, and K9 arrive on the planet Tara, whose population has long mastered the art of android engineering. Romana is apprehended by the ambitious Count Grendel, who seeks to overthrow the king in waiting, and the Doctor is coerced into helping those loyal to the crown. With Reynart locked away in Grendel's dungeons, the Doctor must perfect an android that can be crowned in his place. Yet Reynart is not the only one of Grendel's prisoners to have a double: the captive Princess Strella is Romana's doppelganger.

When the Doctor, Romana and K9 arrive on Bodcombe Moor, they meet the elderly Professor Rumford and her friend Vivien Fay. From them they learn the chequered history of the stones, and of the inhabitants of the nearby manor house - currently one Leonard de Vries, leader of a druidic sect. But all is not as it seems, and soon the Doctor and his companions are enmeshed in a deadly web of deceit.

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. 

Maureen O'Brien reads this thrilling novelisation of a classic Doctor Who adventure. From his one previous visit the Doctor remembers the inhabitants of the planet Dido as a gentle, peace-loving people. But when he returns, things have changed dramatically. It seems that the Didoi have brutally massacred the crew of the crashed spaceliner Astra.

A group of palaeontologists have been savagely attacked while carrying out a study of fossilised dinosaur remains in an underground cave system on twenty-fifth century Earth. A party of troopers and Professor Kyle, the only survivor of the attack, are investigating the deaths of her colleagues when they discover the Doctor and his companions at the site of the massacre. The time-travellers are immediately suspected. In trying to establish their innocence and find out who - or what - was responsible for the killings, the Doctor is confronted by an old enemy.

An unabridged narration of an exciting classic novelisation, based on a TV adventure featuring the Second Doctor, as played by Patrick Troughton. Materialising in outer space, the Tardis is attached by a missile fired from the dark side of the moon. Back on Earth, the newly formed United Nations Intelligence Taskforce (UNIT), led by Brigadier Lethbridge-Stewart, is disturbed by a series of UFO sightings over Southern England.

Jon Culshaw reads this exciting novelisation of a 1975 TV adventure featuring the Fourth Doctor. At a time in the far-off future, Earth has become uninhabitable. A selection of humanity is placed, deep-frozen, in a fully automated space station to await the day of their return to Earth. Thousands of years later, the Doctor arrives with his companions, Sarah and Harry, and finds things going suspiciously wrong.

Forced off course by the Mandragora Helix, the TARDIS lands in the province of San Martino in fifteenth-century Italy. Here, the court astrologer, Hieronymous, has been taken over by the Mandragora energy-form - Hieronymous and the other members of his star-worshipping black magic cult will be used as a bridgehead, enabling the Mandragora Helix to conquer the Earth and rule it through their chosen servants.

The huge, octopus-like Kroll lives deep in the swamps of the humid, steamy planet Delta Three. To the native swamp-warriors, Kroll is an angry mythical god. To the money-grabbing alien technicians, it is a threat to their profit-making scheme. When the Doctor and Romana arrive, in search of another segment of the Key to Time, they have to face the suspicion of the lagoon dwellers, the stupidity of the technicians and, finally, the power of Kroll itself.

An unabridged reading of Ben Aaronovitch's novelisation of his classic 1988 TV adventure featuring the Seventh Doctor. With unfinished business to attend to, the Doctor takes Ace to Coal Hill School in London, 1963. The last time he was there, he left something behind--a powerful Time Lord artefact that could unlock the secrets of time travel. Can the Doctor retrieve the Hand of Omega before two rival factions of Daleks track it down?

Matthew Waterhouse reads this classic novelisation of a Fourth Doctor TV adventure.The Doctor, Romana and K9 are heading for Gallifrey when they temporarily lose control of the TARDIS. The significance of this event is only revealed when they land, not on Gallifrey but on Alzarius. The planet's legendary Mistfall is approaching, a time when giant scaly creatures emerge from the swamps and go on the rampage, leaving a trail of death and destruction in their wake.

Still weak and confused after his fourth regeneration, the Doctor retreats to Castrovalva to recuperate. But Castrovalva is not the haven of peace and tranquillity the Doctor and his companions are seeking. Far from being able to rest quietly, the unsuspecting time-travellers are caught up once again in the evil machinations of the Master. Only an act of supreme self-sacrifice will enable them to escape the maniacal lunacy of the renegade Time Lord.

Geoffrey Beevers reads this exciting novelisation of a 1980 TV adventure featuring the Fourth Doctor, as played by Tom Baker. The Doctor, Romana and K9 - and a young stowaway called Adric - are trapped in the alternative universe of E-Space. Seeking help, they land on an unknown planet. There they find a nightmare world where oppressed peasants toil for the Lords who live in the Tower and where all learning is forbidden: a society in a state of decay. What is the terrifying secret of the Three Who Rule?

On a lazy June afternoon in 1925 the TARDIS materialises at the tiny railway station of Cranleigh Halt. Warmly welcomed by the local gentry, the time-travellers look forward to a well deserved rest from their adventures. But the quiet summer will be shattered by the shocking discovery of a brutal murder.