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 . . . !

Andy Griffiths and Terry Denton's fantastically funny The 13-Storey Treehouse is told through a combination of text and cartoon-style illustrations. Joining the fantastic Treehouse crew is Stig Wemyss who reads the story in the accompanying audio CD.

This is volume 1 in The Treehouse .

This book has been graded for interest at 7-11 years.

There are 256 pages in this book. This is a picture book. A picture book uses pictures and text to tell the story. The number of words varies from zero ('wordless') to around 1k over 32 pages. Picture books are typically aimed at young readers (age 3-6) but can also be aimed at older children (7+). This book was published 2019 by Pan Macmillan .

Jill Griffiths is a very talented editor, and also Andy's wife. She is a key member of the Treehouse team and helps to brainstorm the fantastical adventures. She lives in Melbourne, Australia. Terry Denton has written and illustrated many children's books, several of them with Andy, including the award-winning The 13-Storey Treehouse . He lives with his wife and three children.