Which books from "The Spiderwick Chronicles" will be included in the upcoming film adaption?

Question

I have been told that the first three books from the series will be included, but I am not sure if it is just the first three or if it is the whole series.

Answer 1

From the Spiderwick Blog

Name: Kalyn
Question: Are you basing this film on all 5 books or will there be one movie per book??

HB: The Spiderwick Chronicles film is based on all 5 books, although not all the stuff in all the books made it into the film. Interestingly, some of the characters and places and scenes that didn’t make it into the film might show up in the video game. If you want more info on the movie, there will be downloads, news, games and other stuff showing up on this site as the movie release gets closer.