. "Prophecy of Seven" . . . . "The_Heroes_of_Olympus" . . . . "The Heroes of Olympus" . . . . . "The Heroes of Olympus#The Son of Neptune" . . "The Heroes of Olympus series" . "The Heroes of Olympus" . . . . . "Heroes of Olympus" . . . "the next Great Prophecy" . . . . "'''''The Heroes of Olympus''''' '''series'''" . . . .