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The 39 Clues: The Cahill Files Series
39 Clues: The Cahill Files Book List:
These are standalone short stories each taking place in a different historical time and place. The stories can be read in any order within this series, but they are side stories for the main 39 Clues and 39 Clues: Cahills vs. Vespers series and it's best to have read those two first before reading this one.
Book Sets: Sets of Up to 5 Books
Other Websites for Additional Information:
Official or Publisher Website for The 39 Clues: The Cahill Files Series
Page Last Updated: November 15, 2018