39 Clues
“Access Granted” 39-Day Countdown Campaign Launches as Lead-Up to the 10th and Final Book in The 39 Clues®
“The 39 Clues Book 10: Into the Gauntlet” by Margaret Peterson Haddix
to be Released Worldwide on August 31, 2010
The 39 Clues Global Reading Adventure Heats Up with Release of Book 7: The Viper's Nest; Answer to Key Series Mystery Revealed
Extensive promotional support for the series includes
national author tour, app, and TV, online and in-theater advertising
