39 Clues: The Cahill Files Books in Order
FAQ
How many books are in the 39 Clues: The Cahill Files series?
1 book
When will the next book in the series be released?
No new book is currently scheduled. The latest book, Operation Trinity, was published in May 2012.
When was the most recent book released?
Operation Trinity was published in May 2012.
What was the first book in the series?
The first book in the series is Operation Trinity, published in May 2012.
What genre is the 39 Clues: The Cahill Files series?
The series primarily falls into the Action Adventure genre.
Is the 39 Clues: The Cahill Files series finished?
The series does not currently have a new book scheduled.