The Doctor is enjoying the sun on a holiday island, until things get hotter than he bargained for. The young American, Perpugilliam Brown, brings to the TARDIS a mysterious object that her archaeologist step-father has found in a sunken wreck. When the Doctor’s robot friend Kamelion reacts to the object unexpectedly, it has bewildering consequences for the TARDIS crew.

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.

What's gotten into the TARDIS? Enlisting UNIT in their search for an enigmatic woman who appears all throughout time and space, the Doctor and Ruby uncover deeper mysteries. What is the secret of Susan Triad? What happened on the night that Ruby was born? The answers lead the Doctor and Ruby to a horrifying confrontation with the greatest evil of all. Russell T Davies’ epic two-part finale of Ncuti Gatwa’s first season as the Fifteenth Doctor is novelised by series script editor Scott Handcock, reinstating material from earlier drafts.

What if the story of your life is written in the stars? Belinda Chandra grew up longing to travel – but never imagined rocket ships would be part of the deal. Abducted by killer robots and taken to a strange planet, Belinda must join forces with the Doctor to put right a revolution that might just be her fault…

Fifteen missing people. A light that hungers. A trap outside reality. A trip to 1950s Miami takes a dangerous turn, leaving the Doctor and Belinda at the mercy of Mr. Ring-a-Ding. A cartoon come to life who wants something that only the Doctor can give him. Can Belinda save the Doctor? Or will they be trapped by a trick of the light?

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.

Somewhere outside space and time there waits the Celestial Toymaker, an enigmatic being who ensnares unwary travellers into his domain to play out his dark and deadly games. Separated from the security of the TARDIS, the Doctor is forced to play the complex trilogic game with the evil magician. Meanwhile, Dodo and Steven must enter into a series of tests with, among others, the schoolboy Cyril and the King and Queen of Hearts.

An Escape Room with a sting in its tail is the setting for the Doctor and Jo's latest encounter with a familiar enemy. Three young graduates and their tutor race against time to crack the codes, open the exit door, and obtain 'A New Life' - at least, that's what the publicity said. As the Doctor observes proceedings, he forms a growing suspicion that something far more sinister lurks on the other side of the door. What's worse, the room appears set to eliminate anyone who doesn't make the grade.

Freema Agyeman, Reggie Yates, Adjoah Andoh and Will Thorp are the readers of these eight original novels featuring the 10th Doctor and Martha, as played on TV by David Tennant and Freema Agyeman. The titles are 'Sting of the Zygons' by Stephen Cole; 'The Last Dodo' by Jacqueline Rayner; 'Wooden Heart' by Martin Day; 'Forever Autumn' by Mark Morris; 'Wetworld' by Mark Michalowski; 'Sick Building' by Paul Magrs; 'The Pirate Loop' by Simon Guerrier; and 'Peacemaker' by James Swallow.

An unabridged reading of the 7th Doctor novel by Paul Cornell, which formed the basis for the 10th Doctor television story "Human Nature/The Family of Blood". Hulton College in Norfolk is a school dedicated to producing military officers. With the First World War about to start, the boys of the school will soon be on the front line. But no one expects a war - not even Dr. John Smith, the college’s new house master. The Doctor’s friend, Benny, is enjoying her holiday in the same town.

It's December 1999 and strange things are happening as the new millennium nears. A British police box appears from nowhere in San Francisco’s Chinatown and the mysterious man inside it is shot down in the street. Despite the best efforts of Dr Grace Holloway, the man dies and another stranger appears, claiming to be the same person in a different body: a wanderer in time and space known only as the Doctor. But the Doctor is not the only alien in San Francisco. His deadly adversary the Master is murdering his way through the city and has taken control of the TARDIS.

When the Doctor and Ruby arrive on Cavia, they meet a gentle local who is certain that she has been taken for study by creatures from the stars. The Doctor is concerned to find mysterious meteors appearing in the sky, while strange robotic creatures crowd the forests, watching everything and waiting for… what?

A visit to the Grand Canyon begins with disaster for the Doctor and Peri, when the TARDIS plunges into a ravine. The travellers' only hope is to descend to the valley on foot and then track the course of the Colorado river. Their perilous journey is fraught with danger, even before they encounter a band of 19th Century explorers led by Major John Wesley Powell. Joining the watery expedition, the Doctor and Peri begin to despair of ever seeing the TARDIS again. As food supplies dwindle, so do the group's options. This is a journey which some of them will never return.

For years, 20 million shape-changing Zygons have lived among us in secret. They wear human form, hiding in plain sight. Now a fanatical Zygon splinter group seek to expose their own kind and provoke a conflict that will force both sides to the brink of Armageddon to ensure their own survival. It took three Doctors to broker a fragile peace between Zygons and Humans. Now the 12th must face the fallout alone. With his allies compromised and his companion believed dead, can he stop the world from plunging into war?

The TARDIS arrives on the planet Manussa, about to commemorate its ancient banishment of the evil entity known as the Mara. Unbeknownst to the Manussans, the Doctor's companion, Tegan, has become an unsuspecting medium for the Mara. Now she has helped it to return home. The Doctor realises that this could mark the spectacular revival of the Mara's reign of terror - but it seems that no-one will heed his warning.