Now, Andy and Terry have built their biggest and most astonishing treehouse yet! It has everything they - and you-could wish for, including an electric pony stable, a Santa Land, a NOISY level, a kangaroo-riding range, a weather dome (where you can have whatever weather you want whenever you want it), a 100% edible gingerbread house and a potato-powered translation transmitter that allows you to talk to everything everywhere all at the same time. There's also a hall of funhouse mirrors, which is the perfect place to hide from Mr Bunkoff who is trying to catch Andy, Terry and Jill in order to send them to SCHOOL. But Anti-Andy, Terrible Terry and Junkyard Jill, their troublemaking opposites, are trapped in one of the mirrors - and they want out. (Oh, and Mr Big Nose wants them to write their book ... RIGHT NOW.) Well, what are you waiting for? Can our heroes escape school, do battle with their doppelgangers AND meet their book deadline? Come on up to find out!

Andy Griffiths and Terry Denton began their creative partnership with Just Tricking! in 1997. They have now collaborated on eight Just books (with more than a million copies sold), the off-the-wall The Cat on the Mat is Flat, and now the phenomenal, sales-breaking, award-winning Treehouse series.

Andy and Terry have won numerous kids choice awards and many of their titles are nominated every year. The 13-Storey Treehouse, The 26-Storey Treehouse, The 39-Storey Treehouse, The 52-Storey Treehouse, The 65-Storey Treehouse, The 78-Storey Treehouse, The 104-Storey Treehouse and The 117-Storey Treehouse have all won ABIA awards. The 91-Storey Treehouse won the ABIA Audiobook of the Year in 2018 and The 52-Storey Treehouse also won the overall ABIA Book of the Year in 2015.