INTERNET!!!all u got 2 do is look up the second camp half blood series and all kinds of results hiển thị up,i dont remember how i figured it out,but i think i looked up the một giây camp half blood series on Google and it came up on his blog called myth and mystery,just look it up and ull find it,so,thats how i know that its called Giải cứu thế giới of olympus
Well, for one the side of the book says "The Heros Of Olympus". một giây the tiếp theo book is going to be called "The Heros Of Olympus: Sons Of Neptune". these are the two main reasons we know this, but there are other ways like going to his official book site hoặc foolowing his work over an alternative site.