Series The Heroes of Olympus Companion

The Heroes of Olympus Companion #2 by Rick Riordan Camp Half-Blood Confidential is a 2017 book by Rick Riordan and is book #2 in the The Heroes of Olympus Companion series. Check Price on Amazon

The Heroes of Olympus Companion #1 by Rick Riordan The Demigod Diaries is a 2012 book by Rick Riordan and is book #1 in the The Heroes of Olympus Companion series. Check Price on Amazon