There are 2 books in 1:
Percy Jackson had been betrayed by everyone he knew. And it was all his fault. In a matter of weeks, Percy's life had turned upside down. Cheated,betrayed,hurt. That's all Percy felt as he looked back at camp for the last time. But what happens when Percy dies and meets Chaos? What happens when Percy finds out who his real father is? What happens when Earth needs Percy's help once more?
After 300 years Ali finally gets to meet her brother. But what happens when she does? Will she be happy or disappointed? Will Percy end up suffering or rejoicing after his time on Earth? Will they be the siblings they always wanted?
The only characters I own are Allison and the children throughout the books. All credit goes to Rick Riordan for the main characters.