The Son of Neptune The Son of Neptune The Son of Neptune is a 2011 fantasy-adventure novel written by American author Rick Riordan, based on Greek and Roman mythology. It is the second book in "The Heroes of Olympus" series, preceded by "The Lost Hero" and followed by "The Mark of Athena". The story follows the adventures of amnesiac Percy Jackson, a demigod son of Poseidon, as he meets a camp of Roman demigods and goes to Alaska with his new friends Hazel Levesque and Frank Zhang to free the Greek god of death, Thanatos and help save the world from Gaea, the earth
Concordia (mythology) Concordia (mythology) In ancient Roman religion, Concordia is the goddess who embodies agreement in marriage and society. Her Greek equivalent is usually regarded as Harmonia, with musical harmony a metaphor for an ideal of social concord or "entente" in the political discourse of the Republican era. She was thus often associated with Pax ("Peace") in representing a stable society. As such, she is more closely related to the Greek concept of "homonoia" (likemindedness), which was also represented by a goddess. Concordia Augusta was cultivated in the context of Imperial cult. Dedicatory inscriptions to her, on behalf of emperors and members