Judgement Day: It's Wizards Vs Priests in a Battle for the Future of Roundworld

On Discworld an almighty row is brewing and Lord Vetinari is presiding over the tribunal. The Omnians want control of Roundworld - its very existence makes a mockery of their religion. The wizards of Unseen University, however, are extremely reluctant to part with it. After all, they created it!

Enter Discworld librarian, Marjorie Daw. Perhaps, with her Jimmy Choos and enquiring and logical mind, she can help? Because people on both sides are getting extremely angry. There are some very big questions being asked - and someone's got some explaining to do...

The fourth in the Science of Discworld series, Judgement Day sees Terry Pratchett, Professor Ian Stewart and Doctor Jack Cohen create a mind-mangling mix of fiction, cutting-edge science and philosophy in an attempt to answer the REALLY big questions - taking on God, the universe and, frankly, everything else.