*** The Maze of Bones, Rick Riordan, 2008
Book 1 of the 10-book series, The 39 Clues. Rick Riordan wrote this one and designed the story arc for the entire series. Each of the 39 Clues books will be written by a different author. The second, One False Note, is available as of December 2, 2008, and was written by Gordon Korman.
I liked Rick's first series, Percy Jackson and the Olympians, but I like The Maze of Bones even more. Not sure why. But if you have kids who like this sort of thing, or if you are a kid who likes this sort of thing, The 39 Clues experience also includes trading cards and a huge on-line game which will allow you to become a member of the Cahill family and compete for prizes.If you do the online thing, let me know how it turns out. I'm too busy reading the books.