A review by s_hay
The 39-Story Treehouse: Mean Machines & Mad Professors! by Andy Griffiths

3.0

This is the 3rd Treehouse book by Andy Griffiths, but if you have not read the previous two you will not be lost.
Andy and Terry have been asked to write a book, but they have taken too long and are only a day away from their dead-line. To save time they invent a machine to write the book for them. However, when they decide they want to write some of the book themselves the machine locks them out of their treehouse and takes over. Andy and Terry embark on a crazy adventure as they try to regain control of their treehouse.
Good for ages 8 and up. Will appeal to fans of Captain Underpants and Diary of a Wimpy Kid.