Explorers at Stardust City: the Explorers' Clubs, Book 6
Alex Bell
The Impossible Crime (Mac B., Kid Spy #2)
Mac Barnett
Mac B Kid Spy (2)
Bridget Vanderpuff and the Great Airship Robbery
Martin Stewart
The Shadow Cadets of Pennyroyal Academy
M. A. Larson
Spy Girl
Bridget Zinn