Interest LevelReading LevelReading A-ZATOSWord Count
Grades 4 - 8Grades 5 - 10W7.0118959
The international sensation! The story of an outcast boy, his eccentric dad, and the scary underground world they discover through secret TUNNELS.

14-year-old Will Burrows has little in common with his strange, dysfunctional family. In fact, the only bond he shares with his eccentric father is a passion for archaeological excavation. So when his dad mysteriously vanishes, Will is compelled to dig up the truth behind his disappearance. He unearths the unbelievable: a subterranean society that time forgot. "The Colony" has existed unchanged for a century, but it's no benign time capsule of a bygone era--because the Colony is ruled by a merciless overclass, the Styx. Will must free his father--is he also about to ignite a revolution?
Hardcover, 480 pages
Published on December 10, 2007 by Chicken House
ISBN-10: 0439871778
ISBN-13: 9780439871778
7 Book Reviews
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  • unicornkittycat
    unicornkittycatFriday, November 3, 2017 at 6:04 am55 stars
    I really liked this book because it was very exciting, you never know whats going to happen next. I was also kind of scary, but I recommend this book to maybe ages 10+ Happy reading! :3
    • riordianfanatic
      riordianfanaticThursday, January 21, 2016 at 3:17 pm55 stars
      I read this book because I was told at my school that it was a young adult book and I made a show of buying it and then reading it so that I could be rebellious. Now, I absolutely love this book! I'm halfway through with it!
      • Bookbook Wednesday, January 6, 2016 at 8:01 am
        I love it
        • pirateguyThursday, February 26, 2015 at 12:47 pm
          I am reading this AWESOME BOOK!!!!
          • smilecrazy
            smilecrazyTuesday, October 21, 2014 at 10:41 am
            • zendayafan460
              zendayafan460Wednesday, October 15, 2014 at 9:19 am
              soooooooooooooooooo good.<3
              • kevirino
                kevirinoThursday, March 7, 2013 at 5:42 am55 stars
                I really liked this book it had many twists in the story that you would not expect in any book.