From Snuff: Vimes looked at the cover. The title was The World of Poo. When his wife was out of eyeshot he carefully leafed through it. Well, okay, you had to accept that the world had moved on and these days’ fairy stories were probably not going to be about twinkly little things with wings. As he turned page after page, it dawned on him that whomever had written this book, they certainly knew what would make kids like Young Sam laugh until they were nearly sick. The bit about sailing down the river almost made him smile.

Dodger is a tosher – a sewer scavenger living in the squalor of Dickensian London. Everyone who is nobody knows Dodger. Anyone who is anybody doesn’t.But when he rescues a young girl from a beating, suddenly everybody wants to know him.And Dodger’s tale of skulduggery, dark plans and even darker deeds begins.

A Shivering of Worlds. Deep in the Chalk, something is stirring. The owls and the foxes can sense it and Tiffany Aching feels it in her boots. An old enemy is gathering strength. This is a time of endings and beginnings, old friends and new, a blurring of edges and a shifting of power. Now Tiffany stands between the light and the dark, the good and the bad. As the fairy horde prepares for invasion, Tiffany must summon all the witches to stand with her. To protect the land. Her land.

Somewhere on the frontier between thought and reality exists the Discworld, a parallel time and place which might sound and smell very much like our own, but which looks completely different. Collected together for the first time are seven full-cast BBC Radio dramatisations of Terry Pratchett’s novels, with star-studded casts including Martin Jarvis, Sheila Hancock, Anton Lesser, Philip Jackson, Alex Jennings and Mark Heap.

A bright new dawn is just around the corner for thousands of tiny nomes when they move into the ruined buildings of an abandoned quarry. Or is it?

It is a truth universally acknowledged that a policeman taking a holiday would barely have had time to open his suitcase before he finds his first corpse. And Commander Sam Vimes of the Ankh-Morpork City Watch is on holiday in the pleasant and innocent countryside, but not for him a mere body in the wardrobe. There are many, many bodies and an ancient crime more terrible than murder. He is out of his jurisdiction, out of his depth, out of bacon sandwiches and occasionally snookered and out of his mind, but never out of guile. They say that in the end all sins are forgiven.

Football has come to the ancient city of Ankh-Morpork - not the old fashioned, grubby pushing and shoving, but the new, fast football with pointy hats for goalposts and balls that go gloing when you drop them. And now, the wizards of Unseen University must win a football match, without using magic, so they're in the mood for trying everything else.

Roundworld is in trouble again, and this time it looks fatal. Having created it in the first place, the wizards of Unseen University feel vaguely responsible for its safety. They know the creatures who lived there escaped the impending Big Freeze by inventing the space elevator - they even intervened to rid the planet of a plague of elves, who attempted to divert humanity onto a different time track. But now it's all gone wrong - Victorian England has stagnated and the pace of progress would embarrass a limping snail.

What could be easier than preventing a servant girl from marrying a prince, especially for three clever witches? But Granny Weatherwax, Nanny Ogg and Magrat Garlick face more than they bargained for when they journey to the distant city of Genua. For one thing, their power is limited to Mrs. Gogol's weak voodoo spells, a one-eyed cat and a secondhand magic wand that works only on pumpkins.

The acclaimed Science of Discworld centred on an original Pratchett story about the Wizards of Discworld. In it they accidentally witnessed the creation and evolution of our universe, a plot which was interleaved with a Cohen & Stewart non-fiction narrative about Big Science. In The Science of Discworld II our authors join forces again to see just what happens when the wizards meddle with history in a battle against the elves for the future of humanity on Earth. London is replaced by a dozy Neanderthal village.

In the 'fantasy' universe of the phenomenally bestselling Discworld series, everything runs on magic and common sense. The world is flat and million-to-one chances happen nine times out of ten. Our world seems different - it runs on rules, often rather strange ones. Science is our way of finding out what those rules are. The appeal of Discworld is that it mostly makes sense, in a way that particle physics does not.

A generation after the events of The Long Earth, mankind has spread across the new worlds opened up by Stepping. Where Joshua and Lobsang once pioneered, now fleets of airships link the stepwise Americas with trade and culture. Mankind is shaping the Long Earth - but in turn the Long Earth is shaping mankind...

Mort, like many teenagers, is gangly, unpromising, and struggling with a menial job - in his case, as Death's apprentice. He can barely handle his simple task of ushering souls out of Discworld, but he really screws up when he meets the beautiful Princess Keli, who is scheduled to be assassinated.

The town of Ankh-Morpork is in big trouble and the City Watch is desperate for a few good men to protect it. But all they've got are the dwarves Corporal Carrot and Lance-constable Cuddy, the troll Lance-constable Detritus, Lance-constable Angua, who is believed to be a woman and, worst of all, Corporal Nobbs, who has been disqualified from the human race for shoving! These underdogs need all the help they can get, for they've been given only 24 hours to clean up the war-torn town.

Mightily Oats has not picked a good time to be a priest. He thought he'd come to the mountain kingdom of Lancre for a simple little religious ceremony. Now he's caught between vampires and witches, and he's not sure there is a right side.