Terry Pratchett and Stephen Baxter: The Long War

The two science fiction legends will be discussing their new collaborative series 'The Long Earth' in this one-off event. They'll cover their thoughts on parallel worlds as well as 'The Long War' – the follow-up to 'The Long Earth'. A signing will take place at the end, but numbers are limited and audience members will have to enter a free draw to be in with a chance of being selected. For tickets to the event, see www.terrypratchett.co.uk.