There is a new series that just hit the shelves called the 39 Clues. It's about the Cahill family, the most powerful family in the world. The first book, called The Maze of Bones, is written by Rick Riordan the author of the popular Percy Jackson series. Book Two, One False Note by Gordon Korman, comes out on December 2. Not only are these books, but they are also part of a real life treasure hunt with cash prizes, including a $10,000 grand prize. The books, along with cards that are sold seperately, help unlock the clues to find the prizes. DreamWorks Studio has already bought the film rights and Steven Spielberg is hoping to direct. Check out the 39 Clues website for more details.