David Walliams and host Stephen Mulhern join forces at this, the actor-cum-author's most mega book event yet. Hear Walliams discuss his number one children's book, 'Demon Dentist', as well as his very first picture book, 'The Slightly Annoying Elephant'. Step into a magical world populated by characters from his books. Then meet the man himself and get an autograph. Goody bags for children very much included.