The Underland Chronicles Book Two: Gregor and the Prophecy of Bane

The Underland Chronicles Book Three: Gregor and the Curse of the Warmbloods

The Underland Chronicles Book Four: Gregor and the Marks of Secret

The Underland Chronicles Book Five: Gregor and the Code of Claw

The People of Sparks: The Second Book of Ember

Warriors #1: Into the Wild

The Sorcerer of the North: Book Five

Erak's Ransom: Book Seven

The Heroes of Olympus, Book Three: The Mark of Athena

The Lost Hero (Heroes of Olympus Book 1)

The City of Ember: The First Book of Ember