OH my gods so good! 
 This was one heck of an ending! Surprised around every corner, unexpected conclusions... you name it! 
 Overall, this book did have that looming sense of 'something is very wrong' to it. But even so, the author managed to put certain light humor in it! 
 "" Its him," I said. "Typhon." 
 I was seriously hoping Chiron would say something good, like No, that's our huge friend Leroy! He's going to help us!" 
 "Curse me eh? I"ll make you pay! / I don't want to rhyme all day!" 
 "With great power... comes great need to take a nap. Wake me up later." 
 And then there's a ton of really kick-butt pats where you just sit there like 'woah!" while you are reading. 
 This book is a perfect conclusion to the series. It's fun to read, and has everything a good book should have! 
 (Also I don't know if you noticed, but there's a bunch of foreshadowing to the heroes of olympus series. And I mean a LOT. *cough*House of Hades is mentioned *cough* Annabeth almost falls into a void *cough*) 
 Of course I'm giving this 5 feathers! Pff is that even a question?!