The Mark of Athena
The Heroes of Olympus Book Three. Annabeth is terrified. Just when she's about to be reunited with Percy, it looks like Camp Jupiter is planning for war. And that's only one of her worries. In her pocket, Annabeth carries a gift from her mother that came with an unnerving command: "Follow the Mark Athena. Avenge me."
Author: Rick Riordan
Age: 10 years and up
Format: 578 pages, Soft cover
Editorial: Disney Hyperion Books