The Son of Neptune by Rick Riordan. This is book #2 in the Heroes of Olympus series. In book #1 Percy was missing, but in this book we find out that he really had just lost his memory like Jason. He finds his way into a Roman camp, and ends up going on a quest to rescue Death, and destroy a giant. He does this with the help of his two new friends, Hazel and Frank.
I like these books, because just like the Kane Chronicles series this book is told from different characters’ point-of-views
5 out of 5 stars