Interest LevelReading LevelReading A-ZATOSWord Count
Grades 4 - 8Grades 3 - 6n/a5.345584
Are you ready to save the world? The bestselling series returns with an adventure spanning 6 explosive books, 2 secret-filled card packs, and a website that places readers right in the action.

Thirteen-year-old Dan Cahill and his older sister, Amy, thought they belonged to the world's most powerful family. They thought the hunt for 39 Clues leading to the source of that power was over. They even thought they'd won. But Amy and Dan were wrong.

One by one, distress calls start coming in from around the globe. Cahills are being kidnapped by a shadowy group known only as the Vespers. Now Amy and Dan have only days to fulfill a bizarre ransom request or their captured friends will start dying. Amy and Dan don't know what the Vespers want or how to stop them. Only one thing is clear. The Vespers are playing to win, and if they get their hands on the Clues . . . the world will be their next hostage.
Hardcover, 224 pages
Published on August 30, 2011 by Scholastic Inc.
ISBN-10: 0545298393
ISBN-13: 9780545298391
4 Book Reviews
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  • deathknight
    deathknightWednesday, January 8, 2014 at 1:44 pm55 stars
    I think this book is awesome!! I think this because this book has killings, adventure, and you feel like you're Amy or Dan Cahill which are the main characters.
    • lollipopping
      lollipoppingFriday, October 18, 2013 at 10:31 pm44 stars
      Although this was really good, the first series was still better.
      • lovessTuesday, January 29, 2013 at 3:20 pm
        the 39 cules is awsome it's so good i can't wait to read you i'm on book 11 of your other series Vespers vs Cahills awsome so cool so exited :0
        • lillianna765
          lillianna765Tuesday, November 27, 2012 at 5:09 pm55 stars
          I can't believe that no one actually reviewed the book! It's excellent! It's the first book of the new 39 clues, only called Cahills vs. Vespers!

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