The heart-stopping 39 CLUES series returns with an even deadlier challenge, as a new enemy is revealed to be searching for The 39 Clues too...Amy and Dan's race to save the hostages reaches its thrilling conclusion. Who will be victorious? The Cahills or the Vespers?
- ISBN13 9780545521475
- Publish Date 26 August 2014
- Publish Status Unknown
- Out of Print 19 May 2017
- Publish Country US
- Imprint Scholastic US
- Format Hardcover
- Pages 228
- Language English