The Last Olympian

The Last Olympian is the last book in the world renowned series by Rick Riordan. It is a great ending to the series, full of action and effectively ends all of tiny mysteries that have cropped up through out the series. I really like this book, although it's slightly darker and more serious than the others before it. It's the final stage of the battle between the gods and the Titans, and it's anyones war. Plus, does Camp Half Blood have a traitor in it's midst? Dun dun dun...