The Last Olympian by Rick Riordan

Percy Jackson and the Olympians: Book 5 - This was a really good one. The past couple were okay but did not leave me wanting to read more. This one kept me going through the whole thing. There was a lot of action and a lot of personal introspection of the characters. You really were able to see them grow and make decisions that affected not just themselves, but the whole world. Riordan did a great job and the way he pulled you into this one with his imagination and drama was awesome.