In "Gregor and the Marks of Secret," the fourth book of the Underland Chronicles by Suzanne Collins, Gregor returns to the mysterious Underland, where he faces new challenges and unravels deeper secrets about his destiny. Gregor and his companions, including the warrior princess Luxa and their loyal friend Boots, embark on a quest to save the Underland from looming threats. As they navigate betrayal, war, and powerful prophecies, Gregor must confront his role as the warrior prophesized to bring balance to their world. This gripping adventure blends themes of loyalty, bravery, and the weight of responsibility on young shoulders. [Generated by language model - please report any problems].

This book is part of a book series called Underland Chronicles .

This book is aimed at children at US 3rd grade-7th grade.

This book has been graded for interest at 8-12 years.

There are 352 pages in this book. This book was published in 2013 by Scholastic US .

Suzanne Collins lives in New York City with her family. She has had a successful and prolific career writing for children's television. Gregor and the Rats of Underland is her first book for children.