Clifford Riley has risked his life numerous times to write about the mysterious Cahill family. His location is currently unknown.
- Rapid Fire
- Cahill Files
- Midnight Ride
In real life, Clifford Riley is a psuedonym for members of the Scholastic editorial team.
The person Clifford Riley thanks in the book is the actual author.
- ↑ Minzesheimer, Bob (November 11, 2011). "Scholastic to publish '39 Clues'-inspired e-book stories". USA Today. Retrieved April 29, 2012.