The third book in the CAHILLS VS. VESPERS series the follow up to the worldwide bestseller THE 39 CLUES. The Vespers have crossed a line. Amy & Dan were devastated when the Vespers kidnapped seven Cahills around the world holding them hostage until Amy & Dan delivered an impossible ransom. But at least the hostages were Cahills
- members of the world's most powerful family trained to face all odds. Now the Vespers have gone too far. They've kidnapped Atticus an innocent 11 year old boy & Dan's only friend. Now Dan & Amy are in the struggle of their lives. Because if they can't outwit the Vespers the unthinkable will happen.. . Atticus will die.