User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-58.164.235.5-20130503091953

I personally think that the POV's for the HoH will be the Roman's (i.e. Jason, Hazel and Frank) as well as Annabeth. This is because Percy, Piper and Leo have all had 2 POV's so far in the series and by having the Roman's + Annabeth POV's then all the seven have equal narration. I also think Nico will be the one to close the doors, because supposedly all of the seven are needed to fight Gaea and his promise to Percy at the end of MoA "An oath to keep with a final breth"... So yeah those are my predictions