Blood of Olympus is the last book in the Heroes of Olympus.
2 major characters are canon-ly going to die.
Well played, Riordan.
What if because only Jason, Frank and Hazel are on the cover is because everyone else is dead by the time they fight Gaea?
Or they are the ones who don’t make it, Jason Frank and Hazel…OMG *throwing myself into tartarus*