I have always loved Rick Riordan's books. They are so well thought out and entertaining. I mean, who doesn't like mythology? As usual, The Mark Of Athena was a highly interesting read filled with sword-fighting, spiders, and demigod awesomeness. And that cliffhanger!!!!!!!! I waited a year, a full 365 days to find out what happens to Percy and Annabeth in The House Of Hades. Too bad there are only 5 books in this series. But, Rick Riordan is also starting a new book based on Norse mythology, so that will be very cool!