Book 4

Shatterproof

by Roland Smith

Published 4 September 2012
The NEW YORK TIMES bestselling 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 continues. Where will it lead them next? More titles available: CAHILLS VS VESPERS 1: THE MEDUSA PLOT (Library Edition 9780545324090), CAHILLS VS VESPERS 2: A KING'S RANSOM (Library Edition 9780545324106) and CAHILLS VS VESPERS 3 (9780545324120).

The NEW YORK TIMES bestselling 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 continues. Where will it lead them next? More titles available: CAHILLS VS VESPERS 1: THE MEDUSA PLOT (9780545298391), CAHILLS VS VESPERS 2: A KING'S RANSOM (9780545298407) and CAHILLS VS VESPERS 3 (9780545298414).