User blog comment:Hyperborean/"The House of Hades" – official expectations blog/@comment-50.53.164.184-20130502220913

There is a spell that Carter can cast to make him teleport somewhere if someone says his name. In Son of Sobek, Carter meets Percy so Carter could cast that spell on Percy and teleport into Tartarus with him and Annabeth. Then cast the spell again on Annabeth. Then Annabeth can say Carters name when closes the doors of death and Carter can teleport out. Or they could all do that making an epic Eygptian/Greek/Roman army. Either way nobody dies unless they have trouble in Tartarus and have a few cassulaities. Also would be hard for Rick to expain.