User blog comment:SayuriDarling/Full first chapter of The Mark of Athena/@comment-94.168.77.157-20120606134728

I think that the four charcter POVs will be Annabeth; Reyna; Nico; Rachel/Thalia...IDK why...

Also, Gaia said that Nico had his own reasons for bringing Hazle back. In TBotL (Battle of the Labyrinth) he tried to bring Bianca back - a soul for a soul. Since Bianca was reborn, maybe he's trying to bring bakc his MOTHER. Everyone thought about Bianca but not many about Amria di Angelo. That way, Hades AND Nico would be happy...if only Bianca hadn't been reborn...unless Bianca was chosen by Gaia to be reborn, and she was reborn as herself, that way she could give info about Gaia to the demigods...

just a thought