Here comes the final! It seems that Rick Riordan really like five books? Percy Jackson has five books and so does Heroes of Olympus. My opinion for this book...Ahhh! where to begin? I was so disappointed!!! We only got a little bit Percy and Annabeth, but thank god that they return safely. On the other hand, shouldn't the plot focus on the seven demigods? Why do we have so many people aside from the demigods in the prophecy? 
 Everything is "might." It might save the camp, Gaea might awake...blablabla. This book many focus on Jason and Nick (Also those who are closer to them.) Jason seems to handle the biggest part of this quest, and Nick is under the huge responsibility to bring peace to two camps. So, as you can see, there's hardly part for Percy and Annabeth. In my mind, the book is almost a prequel to the upcoming book: Roman Demigods. We get seven demigods, but only Jason and Percy seem to be important enough during the series. Yes we got others' POV, but can we recognize the different? The answer is no. And in the later books, we can see Percy become less important. (Except in the House of Hades...they are a vital part of it.) And in The Blood of Olympus, it almost becomes Jason and Nick!!! Another part I'm not satisfied with is the POV! Again? Really? We still have the same problem as the forth book: so many characters. Even though I said before that the main part is on Jason and Nick, but it's still be seen under different eyes of view. I feel my brain going to be twisted when I read the book. I must say, even though I don't like Jason, the first book: The Lost Hero is still better than this book. When in the previous books, we got clear opinions and story line. But when it turns to the last part of the series, there are too many plots to read and too much information to absorb. It's not as well organized as the Percy Jackson series or even the first two books in The Heroes of Olympus. Still, even there are advantages in this book. (All right, it's not that bad...) Remember I first say The Lost Hero and The Son of Neptune are sometime boring because of the similar stories? Here in The Mark of Athena, The House of Hades, and the last book: The Blood of Olympus we got a new different kind of plots that really WOW us. It won't seem so similar to the previous book written by Rick Riordan. So...recommend this book or not? I must say I was disappointed with this book, but it's still a great, just like others books among the series. 
 p.s. for those who like the god and goddess from Olympus...don't be too anticipated this time... the moment that the twelve gods stand up with the seven demigods is...nothing. Come on! Even some little gods perform better than that! 
 This is post originally in my blog 
 Vivian's Book Pavilion 
 http://viviansbookpavilion.blogspot.com/