Search Worlds Without End

"Oh no, not again..."

It's the ultimate in mass transit systems, a network of interstitial tunnels that bind the planets of the solar system together. Earth to Pluto in forty minutes with a supersave non-premium off-peak travelcard.

But something is living in the network, chewing its way to the very heart of the system and leaving a trail of death and mutation behind it.

Once again a reluctant Doctor is dragged into human history. Back down amongst the joyboys, freesurfers, chessfans, politicians and floozies, where friends are more dangerous than enemies and one man's human being is another's psychotic killing machine.

Once again the Doctor is all that stands between humanity and its own mistakes.

Just how technologically advanced are they?" The Doctor frowned. "Let me put it this way: they have a non-aggression pact with the Time Lords."

The Doctor has taken his companions to paradise, or at least the closest thing he can find. A sun enclosed by an artificial sphere where there is no want, poverty or violence.

While Chris learns to surf, meets a girl and falls in love with a biplane, Roz suspects an alien plot and Bernice considers that a Dyson Sphere needs an archaeologist like a fish needs a five-speed gear box.

Then the peace is shattered by murder. As the suspects proliferate, Bernice realises that even an artificial world has its buried secrets and Roz discovers what she's always suspected -- that every paradise has its snake.

"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.