Jack the Ripper is a legendary gothic tale of Victorian conspiracies, the supernatural, secret societies and the police. Scotland Yard hunted a serial killer shrouded in politics as the mutilator of East End prostitutes infused pop culture with demonic horror. This book uses historic sources and rar[...]

In 1888 the unknown brought death and terror to the streets of Victorian London's East End. The Man Who Hunted Jack the Ripper is the story of Detective Inspector Edmund Reid, who was head of the Whitechapel detective force. Having joined the Metropolitan Police Force, Reid rose through the ranks an[...]

An account of Jack the Ripper, the Victorian serial murderer whose identity remains one of criminology's greatest mysteries. It contains: the contents of the Scotland Yard files covering the series of murders; press reports; witness statements and extracts from police notebooks; and, documents missi[...]

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. But now it's all gon[...]

Marjorie Daw is a librarian, and takes her job - and indeed the truth of words - very seriously. She doesn't know it, but her world and ours - Roundworld - is in big trouble. On Discworld, a colossal row is brewing. The Wizards of Unseen University feel responsible for Roundworld (as one would for a[...]

The sequel to the bestselling Science of Discworld.
The acclaimed Science of Discworld centred around 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-[...]

Do we live in a simple or a complex universe? Jack Cohen and Ian Stewart explore the ability of complicated rules to generate simple behaviour in nature through 'the collapse of chaos'. 'The most startling, thought-provoking book I've read all year. I was pleased to learn that most of the things I t[...]

Not just another science book and not just another Discworld novella, "The Science of Discworld "is a creative, mind-bending mash-up of fiction and fact, that offers a wizard's-eye view of our world that will forever change how you look at the universe.
Can Unseen University's eccentric wizards [...]

When Charles Darwin writes the wrong book and reverses the progress of science, Unseen University s wizards must once again save Roundworld (Earth, that is) from an apocalyptic end.
Ever since a wizardly experiment inadvertently brought about the creation of Roundworld, the wizard scholars of U[...]