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The 39 Clues: Unstoppable Series
Book 1 Summary: The Cahill family has a secret. For five hundred years, they have guarded the 39 Clues—thirty-nine ingredients in a serum that transforms whomever takes it into the most powerful person on earth. If the serum got into the wrong hands, the disaster would rock the world. So certain Cahills have always made it their mission to keep the serum safe, buried, locked away. Until now.
39 Clues: Unstoppable Book List:
This series should be read in the correct order listed here.
Book Sets: Sets of Up to 4 Books
Best Seller Lists:
New York Times best-seller list
Publishers Weekly best-seller list
USA Today best-seller list
Wall Street Journal best-seller list
Other Websites for Additional Information:
Official or Publisher Website for The 39 Clues: Unstoppable Series
Author Website for Jeff Hirsch
Author Website for Gordon Korman
Page Last Updated: September 29, 2019