User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-69.127.161.128-20121113030755/@comment-4649443-20121114204159

I was thinking this--Annabeth, like Leo, figures out the Doors-have-to-be-closed-on-both-sides thing and explains it to Percy, but says worry about it later. When they get to the Doors being chased by thousands(not an exaggeration) of monsters, suddenly Percy gets stabbed in the shoulder, stomach, etc., by chasing monsters. Percy forces Annabeth out(despite her protests) and shouts at Frank that it's his duty to close the Doors. They close it, and Percy is left on the other side. Annabeth thinks he's dead and lashes out at everyone. NIco says he can't be sure he's dead, Hazel suggests they open Thanatos's Skype(using Daedalus's laptop) to request a pass(how will this help Percy? Gwen healed from her wounds when she got resurrected) and Thanatos says he was dying but just as Thanatos was about to take his soul, he was taken by the monsters and dumped into water(because Gaea needs him alive for the sacrifice).