April 29, 2015 – Mark of Athena (The Heroes of Olympus, #3) – Rick Riordan May 1, 2015April 30, 2015 reading_kid Fantasy Buy The Heroes of Olympus – Book Three: Mark of Athena on Amazon Share this:Share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Google+ (Opens in new window) reading_kid