Andy and Terry live in the WORLDS BEST treehouse! Its 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 youre 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, dont get trapped in a burp-gas-filled bubble . . . !Andy Griffiths and Terry Dentons fantastically funny The 13-Storey Treehouse is told through a combination of text and cartoon-style illustrations.