Andy and Terrys amazing treehouse has thirteen new levels! Theyve added a chocolate waterfall you can swim in, a volcano for toasting marshmallows, a bulldozer-battling level, a baby-dinosaur-petting zoo, a not-very-merry merry-go-round, a boxing elephant called the Trunkinator, an X-ray room, a disco with light-up dance floor, the worlds scariest roller coaster and a top-secret thirty-ninth level which hasnt even been finished yet! But how can they enjoy all this brilliant stuff when they have to write a book faster theyve ever done before? Youll have to read it to find out! The 39-Storey Treehouse is the third book in Andy Griffiths and Terry Dentons wacky treehouse adventures, where the laugh-out-loud story is told through a combination of text and fantastic cartoon-style illustrations.