A special 20th anniversary edition of the first ever Horrid Henry book in which Henry tries to be perfect for one day, learns to dance, argues with his arch enemy Moody Margaret and goes on holiday. With a double die-cut cover and brand new extra material including the top twenty questions from Horrid Henry fans and readers about the world's favourite naughty boy - Has Horrid Henry got a girlfriend? What's the worst thing Perfect Peter has ever done? Were Horrid Henry's mum and dad ever naughty? Look out for the answers! Horrid Henry is a prize-winning 20-million-copy-selling series, illustrated by Tony Ross, who also illustrates David Walliams' children's books, and his own picture books.