"Andy and Terry are once again inviting readers to come hang out with them in their astonishing 39-story treehouse (it used to be 13 stories, then 26 stories, but they keep expanding). And this year they will have even more time to jump on the world's highest trampoline, toast marshmallows in an active volcano, swim in the chocolate waterfall, pet baby dinosaurs, and go head-to-trunk with the Trunkinator, since Terry has created the greatest invention...

Andy and Terry try to solve the mystery of: What happened to Mr. Big Nose? After all, it's hard to turn in your next book when your publisher has vanished.

Andy and Terry must get past their differences to save their story ideas from a herd of spy cows.

Who wouldn't want to live in a treehouse? Especially a 13-story treehouse that has a bowling alley, a see-through swimming pool, a tank full of sharks, a library full of comics, a secret underground laboratory, a games room, self-making beds, vines you can swing on, a vegetable vaporiser and a marshmallow machine that follows you around and automatically shoots your favourite flavoured marshmallows into your mouth whenever it discerns you're hungry....

Andy and Terry travel through time trying to save their treehouse from highly talented, angry ants and Inspector Bubblewrap the building inspector while rushing to meet their publisher's deadline.

Andy and Terry's 13-storey treehouse is the most amazing treehouse in the world! It's got a bowling alley, a see-through swimming pool, a tank full of man-eating sharks, a giant catapult, a secret underground laboratory and a marshmallow machine that follows you around and shoots marshmallows into your mouth whenever you're hungry. Well, what are you waiting for? Come on up!

The three little pigs are in their usual trouble with the big bad wolf, until a mysterious Voice gets involved and mixes things up.

From the creator of Sofia Valdez comes an uplifting story about the power of art, finding your voice, and telling your story even when you're out of step with your peers.

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???