Gregor and the Curse of the Warmbloods (The Underland Chronicles #3)

The Underland Chronicles #4: Gregor and the Marks of Secret

The Underland Chronicles #5: Gregor and the Code of Claw

The Underland Chronicles #2: Gregor and the Prophecy of Bane

The Underland Chronicles #1: Gregor the Overlander

The Unwanteds