Mr Griffiths' work is both witty and fantastical, with a dark edge not dissimilar to Roald Dahl, The New York Times Book Review
Yes, there's more. Andy and Terry have been hammering and clamoring and creating a bigger and even better (if that's at all possible) treehouse...What ensues is typical Griffiths/ Denton mania of laugh-out-loud proportions, and I have to say this really is my favourite Treehouse book yet.
Kid's Book Review on The 39-Storey Treehouse
With trademark wit, humour and silliness Andy pens a great tale.
My Book Corner on The 26-Storey Treehouse