The Son of Neptune is the second book in The Heroes of Olympus.

The Son of Neptune
The Son of Neptune


Rick Riordan


Hyperion Books

Release Date

October 4, 2011



Preceded by

The Lost Hero

Followed by

The Mark of Athena

Main Characters:Edit


Before going on a quest, a prophecy must be issued and was therefore insisted upon by Octavian. Mars gave them an informal prophecy (which he made up on the spot). It was more like instructions rather than a guide, written by Mars himself on paper and his grenade-turned-ballpen:

"Go to Alaska. Find Thantos and free him. Come back by sundown on June twenty-fourth or die."

Prophecy from Sibylline BooksEdit

When inside the Zhang's family mansion, Ella the harpy recites two lines of an ancient prophecy that she must have memorized, to Frank Zhang:

"To the north, beyond the gods, lies the legion's crown. Falling from ice, the son of Neptune shall drown-"

This part of the prophecy was apparently read by Ella from the Books of Sibylline (somehow), but was not able to recite the whole prophecy because the rest was burnt before she got the chance to read it all.  This leads to a lot of speculation, and Percy, son of Poseidon (Neptune's Greek counterpart) begins worrying over how he could drown.


  • UK Cover
  • Percy Jackson
  • Frank Zhang
  • Hazel Levesque
  • Jason Grace