INTERNET!!!all u got 2 do is look up the second camp half blood series and all kinds of results tampil up,i dont remember how i figured it out,but i think i looked up the detik 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 heroes of olympus
Well, for one the side of the book says "The Heros Of Olympus". detik the selanjutnya 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 atau foolowing his work over an alternative site.