Fablehaven by Brandon Mull
This is the first book in the Fablehaven series. It is an excellent read and appropriate for every age. It has a different take on the fantasy genre, but it was very well done. The story was very interesting and the characters were very likeable. Also, there is an obvious "moral" to the story about being responsible and obeying the rules. It is about two kids, Kendra and Seth, who go to stay with their grandparents during the summer. While there, they discover that their grandparents are the caretakers of a magical preserve. Kendra and Seth become caught in a plot to free an ancient demon and they have to learn more of Fablehaven's secrets in order to stop it.