I know that Percy and Annabeth falling into tartarus is still a touchy subject, but what if - just what if - they meet a ghost down there, and the ghost’s name is Ruby Kane? Ruby Kane as in Carter and Sadie Kane’s mom. And she helps them and all that good stuff.
It’s possible because at the end of The Serpents Shadow, she pulled Sadie to the corner and was like “There are other gods” or something along those lines. And all through The Kane Chronicles there were references to PJO. Carter saw a pegasus from his balcony, Sadie was friends with Lacy from the Aphrodite cabin, Drew showed up, and Lacy and Drew started arguing over something that happened at camp.
Guys, Rick has opened up so many darn possibilities.
The wait for HoH has just gotten ten times worse, okay.