1. NICO

For the first time in a long time, Nico's life was working out for the better. Will and Nico become close, but then the nightmares start.
At first they didn't suspect anything, demigods often get nightmares but then things began to happen. Without the oracle Delphi they had no idea what was happening.

Set after the blood of olympus:
DISCLAIMER: I DON'T OWN ANY OF THE CHARACTERS, THE COVER IS NOT MY ART WORK.