Doctor Who Books: BBC Classic Series Books

May 17th 1944: A squadron of Hurricanes shoots down an unidentified aircraft over the Dorset village of Turelhampton. A routine operation. So why is the village immediately evacuated?

The Brigadier's wife is dead. A terrible accident. Grieving, he searches for death, and finds his way to Avalon, the other-dimensional Kingdom of the Catuvelauni.

Enter, with the Doctor, Anji and Fitz, an Empire where the laws of physics are quite preposterous - nothing can travel faster than the speed of light and time travel is impossible.

This week: A hideous, misshapen creature releases a butterfly.

This is the city: a technological paradise built by an advanced race. Its glittering towers reach proudly for the stars, and its spires are looped by elevated roadways.

'The Krill are pure rage. Pure aggression. There is nothing for me to reason with, nothing that I can appeal to. By now there must be millions of them out there, and I don't know how to stop them.'

Jo gripped the sides of the console. Even over the roar of the engine she could hear branches whipping and snapping against the TARDIS exterior. The view on the scanner was receding at the speed of an express train. It showed the swathe of destruction they were leaving behind them, a ragged, police box-shaped tunnel through the forest.

Peri hasn't been time-travelling for long and is just getting used to the Doctor and the TARDIS. The Doctor's such a sweet, friendly guy and the TARDIS keeps leaving her little presents, which is neat. When the TARDIS takes them to a party of super-advanced humans on a pleasure-planetoid in the far future (even neater!), Peri falls for the charms of the local hunk and finds herself flying headlong into a quite different form of time-travel...

Far out in space, on the ragged edges of Earth's bloated empire, an elite unit of soldiers is on a training mission. But deep in the heart of the hollowed-out planetoid that forms their battleground, a chilling secret waits to be discovered: ten alien corpses, frozen in time at the moment of violent, bloody death.