I recommend  reading this book.

First, well what is about? As it says in the title, it is about a tree house – not a ordinary tree house but a tree house that has a bowling alley and also a lemonade fountain, a shark pit, a massive cinema and a bunch more stuff. At the start you might start to cry because a boy chucks a cat off a balcony. However, the boy said that it was a canyon by painting it yellow so when he chucks the cat off the balcony the cat starts to fly.  Then the cat gets out of sight and that was not their cat, it was their friend’s cat at the other side of the forest. The girl who owns it is trying to find the cat but she cant, so then she says to the boy “do you know where my cat is?”  and the boy said “no I do not no where she is”. Next she starts to put up posts about her lost cat and the reward was just “call me” (that is all it said). After that another boy came because he said that their publisher wanted a new book and said that it had to be done by tomorrow at 5;30 pm and that if it was not then he would fire them. They started straight away.