39 Clues

I have been reading a really exiting book series, The 39 Clues. I have already read book 1, and received books 2 and 3 today. They also have a really cool website where they have nice games and missions. Each book comes with 6 playing cards and one of them has a code you can use at the website. There are also card packs with 16 cards (but I don't have those yet).

I recommend the books for everybody who is interested in agent adventures.