Titles in This Set The 13-Storey Treehouse The 26-Storey Treehouse The 39-Storey Treehouse The 52-Storey Treehouse The 65-Storey Treehouse Description The 13-Storey Treehouse Andy and Terry live in the WORLD'S BEST treehouse! It's got a giant catapult, a secret underground laboratory, a tank of man-eating sharks and a marshmallow machine that follows you around and shoots marshmallows into your mouth whenever you're hungry! Just watch out for the sea monkeys, and the monkeys pretending to be sea monkeys, and the giant mutant mermaid sea monster . . . Oh, and, whatever you do, don't get trapped in a burp-gas-filled bubble . . . ! The 26-Storey Treehouse Andy and Terry have expanded their treehouse! There are now thirteen brand-new storeys, including a dodgem-car rink, a skate ramp, a mud-fighting arena, an antigravity chamber, an ice-cream parlour with seventy-eight flavours run by an ice-cream-serving robot called Edward Scooperhands, and the Maze of Doom - a maze so complicated that nobody who has gone in has ever come out again . . . well, not yet anyway . . The 39-Storey Treehouse Andy and Terry's amazing treehouse has thirteen new levels! They've 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 world's scariest roller coaster and a top-secret thirty-ninth level which hasn't even been finished yet! But what good is all this stuff when Andy and Terry are trying to write their fastest book ever? You'll have to read it to find out! The 52-Storey Treehouse Andy and Terry have expanded their treehouse! There are now thirteen brand-new storeys, including a dodgem-car rink, a skate ramp, a mud-fighting arena, an antigravity chamber, an ice-cream parlour with seventy-eight flavours run by an ice-cream-serving robot called Edward Scooperhands, and the Maze of Doom - a maze so complicated that nobody who has gone in has ever come out again . . . well, not yet anyway The 65-Storey Treehouse Andy and Terry's incredible, ever-expanding treehouse has thirteen new storeys, including a watermelon-smashing level, a wave machine, a life-size snakes and ladders game (with real ladders and real snakes!), a rocket-powered carrot launcher, a Ninja Snail Training Academy and a high-tech detective agency with all the latest high-tech detective technology. Which is lucky, because they have a BIG mystery to solve - Where is Mr Big Nose??