While stocks last we have copies signed by Andy Griffiths to purchase in our seven shops and online. Please note that stock is limited.Andy and Terry’s treehouse now has 13 new storeys, including a tiny-horse level, a pyjama-party room, an Underpants Museum, a photo-bombing booth, a waiting room, a Door of Doom, a circus, a giant-robot-fighting arena, a traffic school, a water-ski park filled with flesh-eating piranhas and a treehouse visitor centre with a 24-hour information desk, a penguin-powered flying treehouse tour bus and a gift shop.Well, what are you waiting for? Come on up!