User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-5812567-20121203232836/@comment-3285234-20121204015713

I'm 90% sure we won't be seing Annabeth and Percy in the next book.

Why? Common Sense.

There will be three POV's in this one - The three Romans (Since the last one was an all Greek POV) And even if Nico have a POV. There is NO WAY we can see them since ALL the Narrators going to House of Hades.

HoH will end as they get close to the Doors of Death or once they got out of the House of Hades.