Search Worlds Without End

He took up a firing stance, holding the thirty-eight out in front of him. "Mr Lennon?" he said.

• 1968: Cristian Alvarez meets the Seventh Doctor in London.
• 1978: The great temple of the Aztecs is discovered in Mexico.
• 1980: John Lennon is murdered in New York.
• 1994: A gunman runs amok in Mexico City.

Each time, Cristian is there. Each time, he experiences the Blue, a traumatic psychic shock. Only the Doctor can help him -- but the Doctor has problems of his own. Following the events of Blood Heat and the Dimension Riders, the Doctor knows that someone or something has been tinkering with time. Now he finds that events in his own past have been altered -- and a lethal force fromSouth America's prehistory has been released.

The Doctor, Ace and Bernice travel to the Aztec Empire in 1487, to London in the Swinging Sixties, and to the sinking of the Titanic as they attempt to rectify the temporal faults -- and survive the attacks of the living god Huitzilin.

Dead. He was dead. How the hell was she supposed to do CPR on a man with two hearts?

There's a rip in the fabric of space and time. Passenger ships are disappearing from the interstellar traffic lanes. In an attempt to find out who's behind the disappearances, the Doctor and Ace allow themselves to be captured. But whenBernice's rescue attempt goes terribly wrong, the time travellers find themselves scattered throughout history.

Ace, stranded in Ancient Egypt, struggles to survive in an environment as alien as a distant planet: the Earth 3,000 years before she was born. She manages to find employment as a nobleman's bodyguard. And then she comes face to face with the metal horrors which have pursued her through time - the creatures she saw kill the Doctor.

Stay the hell out of my mind," hissed Forrester. "Just stay away from me." She turned and stalked out of the room. Chris put his head in his hands.

The Earth colony on Yemaya 4 is a very ordinary place. The colonists spend their time farming, building homes, raising families.

But when the Doctor and his companions arrive they find a virus sweeping through the population, unleashing the colonists' latent psychic powers. The Doctor and Chris fall prey to the infection, and discover telepathy is not the only symptom. Chris is unable to resist the call of an ancient place of sacrifice, while Roz and Benny travel back in time to the origin of the virus, and uncover a desperate bid for immortality.

And all the while the Doctor is playing a dangerous game with troopers of the Dione-Kisumu company, who have come either to reclaim the stolen biotechnology -- or to sterilise the planet.

"It's me, daddy. It's Bernice."

Bernice Summerfield was seven years old when her father disappeared. They said he turned and ran from the Daleks in battle. They said he was a coward.

They were wrong.

For years Benny has searched for her father. Now a clue snatches her from her honeymoon, back to the TARDIS, and on to England in the year 1983. There she at last discovers Admiral Isaac Summerfield, leading a motley crew of aliens, psychics and fanboys. Their mission: to save extra-terrestrials stranded on Earth.

But what is Benny's father doing five hundred years in his own past? And why has he been waiting for the Doctor to arrive? Can Benny really trust the man she's been looking for all her life?

"If you step into history," said the Doctor, "I won't be able to protect you."

"This isn't history," said Roz. "This is family."

The Earth Empire - the Imperium Humanum, upon which a thousand suns never set - is dying.

The Great Houses of the Empire manoeuvre and scheme for advantage; alliances are made; and knives flash in the shadows. Out among the moons of Jupiter, another battle is just beginning, as an ancient brotherhood seeks limitless power and long-overdue revenge.

The Doctor returns to the thirtieth century, searching for the source of a terrifying weapon. He fears a nightmare from his own past may be about to destroy the future. Nothing must be allowed to get in his way.

But the Doctor has reckoned without the power of history - which has its own plans for the wayward daughter of the House of Forrester.

"Dear Doctor," wrote Chris, "I give up."

Swordplay, samurai, demons, magic, aliens, adventure, excitement... Who needs them?

The Doctor and Chris travel to 16th-century Japan, a country gripped by civil war as feudal lords vie for control. Anything could tip the balance of power. So when a god falls out of the sky, everyone wants it. villagers are healed and crops grow far too fast, the Doctor and Chris try to find the secret of the miracles -- before the two rival armies can start a war over who owns the god. Chris soon finds himself alone -- except for an alien slaver, a time-travelling Victorian inventor, a gang of demons, an old friend with suspicious motives, a village full of innocent bystanders, and several thousand samurai.

Without the Doctor, someone has to take up the challenge of adventure and stop the god from falling into the wrong hands. Someone has to be a hero -- but Chris isn't sure he wants to be a hero any more.

'I'm scared of letting all these people down. Like the whole human race. At least if I get blown up as well, they can say I died heroically. Assuming I ever existed at all.'

When Bernice Summerfield visits the People -- an incredibly advanced civilisation living in a Dyson Sphere -- she discovers that even in utopia they still have their problems.

An illegal time travel experiment threatens a war which could destroy them all. Rather than risk it, the People and their ultra-powerful computer, God, are prepared to eradicate the source of the problem -- the ancient city of Babylon. But such action would involve the death of a quarter of a million human beings, and do incalculable damage to Earth's history.

Babylon -- and the human race -- have one hope. Benny returns to the cradle of civilisation to try and stop the interference. She has just one week to prevent a catastrophe that could mean she will never be born. Her only assistance comes from a Victorian linguist who has stumbled across the experiment himself. But he's no help at all -- even though he has a power neither of them suspects.