User blog comment:Darkcloud1111/Mistakes in The House of Hades/@comment-4531415-20131116222027/@comment-3146930-20131116222944

Yup, every year we try to find all the mistakes in the newest book and how they relate to the previous books. A good example is when Annabeth is standing over that one river and it tells her that Zoe and Bianca died trying to save her, when in fact they were trying to save Artemis. It was Percy and Thalia's goals to save Annabeth and Grover was trying to save both.