The Hawthorne Prophecy: a Percy Jackson and Inheritance Games crossover
53 parts Ongoing When Avery Grambs receives an invitation to a mysterious gala at the Hawthorne House, she expects more riddles, more hidden passageways, and maybe another cryptic letter from Tobias Hawthorne. What she doesn't expect? Greek gods, demigods, and a prophecy that ties her fortune to something much, much older than the Hawthorne family legacy.
Meanwhile, Percy Jackson and Annabeth Chase are sent on a mission by Chiron to investigate strange disturbances in Texas-disturbances that lead them straight to the Hawthorne estate. There, they find that the enigmatic Tobias Hawthorne might have had more secrets than even his heirs realized-secrets tied to the gods themselves.
As riddles intertwine with prophecies, and Hawthorne scheming meets demigod quests, Avery, the Hawthorne brothers, and the demigods must work together to prevent an ancient force from awakening. But with puzzles that test more than just intelligence, and betrayals lurking in every corner, will they be able to solve the ultimate game before time runs out?
all the credits for pjo go to uncle rick, an for the inherintance games to jennifer lynn barnes. i only own the plot