Gregor and the Marks of Secret
2006
Book 4 of The Underland Chronicles
Great fit for 5th grade
Reading level and content both target 4th–8th grade · ages 9–14
Themes include war and its consequences
Book 4 in a series — earlier books first
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Genre
Themes
- courage
- loyalty and family
- friendship across differences
- prophecy and destiny
- leadership and responsibility
- resistance to oppression
- war and its consequences
- truth and secrets
About this book
Twelve-year-old Gregor returns to the Underland beneath New York City, where humans, bats, cockroaches, and rats are on the brink of war. With Princess Luxa and the sharp-tongued rat Ripred at his side, Gregor follows a troubling new prophecy and investigates a threat against the mice (Nibblers). As clues mount, he must decide who to trust and how far he’ll go to protect his friends and family. Fast-paced action, rich worldbuilding, and talking animal allies make this installment a favorite for adventurous middle-grade readers.
Setting: the subterranean Underland beneath New York City—caverns, tunnels, and human and animal kingdoms
Frequently Asked Questions
Is Gregor and the Marks of Secret right for my child?
Yes — Gregor and the Marks of Secret is a great fit for 5th grade. The reading level is AR 5, which is typical for 5th grade. The interest level is rated Middle Grades (4–8), meaning the themes and content are designed for ages 9–14 (4th–8th grade). Themes include courage, loyalty and family, friendship across differences. Note: this is book 4 in a series — your child should read the earlier books first.
How long does it take to read Gregor and the Marks of Secret?
At a typical 5th grade reading pace, Gregor and the Marks of Secret takes around 8.0h to finish. The book has 79,000 words. Slower or faster readers may vary significantly.
Does Gregor and the Marks of Secret have an AR quiz?
Yes — Gregor and the Marks of Secret has an AR quiz available, worth 11 points. Your child will need to take and pass the quiz through their school's Accelerated Reader program to earn credit. The quiz is typically 5–20 multiple choice questions about plot, characters, and setting.
What grade level is Gregor and the Marks of Secret?
Gregor and the Marks of Secret has an AR reading level of 5, which places it at a 5th grade reading difficulty. The interest level is rated Middle Grades (4–8) — this reflects the age-appropriateness of the content and themes, not just the reading difficulty. A strong younger reader may handle the words fine while the themes are aimed at an older audience, or vice versa.