** spoiler alert ** 
 the ending was really disappointing i thought it would involve more action and plot twist. i wish there was more of an epilogue where we saw leo with the rest of the gang but we still don't know if 100 years has really past , i wish it was much more clear. i also would have liked to see more emotion and trauma coming from percy and annabeth since they just came back from tartarus. i didn't like how the end battle played out because it seems ridiculous to just snatch mother earth up to the sky. it was pretty obvious that leo was going to die but i wasn't sure if he was going to use the physician's cure or not. what i did like about this book was how much character development we got from nico it was really nice to see him making friends and maybe even more. i really would have appreciated an epilogue to clarify everything that happened for example is nico going to end up with will and what happened to leo. overall i was disappointed but happy that rick riordan is making a new series about Apollo