A kids version of National Treasure! This is the first in a series of 10 books. But no long wait since they're using different authors and the next is due out in December. Rick Riordan (of Percy Jackson fame) wrote the first one and was involved in the developing the overall story arc. Very easy to read and entertaining. Finally a young girl leading the way! And of course I'm playing along online to find the treasure! There are trading cards also which come with clues. Since the clues are designed for kids, I'm actually able to solve them and learn some history along the way.