Follow an ingenious trail of 400 facts about everything from secret recipes and escape artists to hidden treasure and invisibility cloaks. You'll meet an underwear-stealing cat, find out about sharks that glow, uncover a toilet in disguise and learn about the biggest ever game of hide-and-seek. And the facts aren't the only secrets in this book, for hidden amongst the illustrations are ten mice just waiting to be found! Lavishly illustrated with witty illustrations that combine artwork and photography, and verified by the experts at Encyclopaedia Britannica, Secret FACTopia! sheds light on some of the world's most amazing 'hidden' facts, which children will be desperate to share with their friends and family.