A new enemy. An even deadlier challenge. The NEW YORK TIMES best-selling series returns. The Clue hunt is over but Amy & Dan's lives haven't returned to normal. They soon find themselves in a new global race but this time everything's different. Their enemy is a mysterious organization that
Includes:: some of the world's most dangerous criminals. Known as the Vespers they have rivalled the Cahills throughout history & have been waiting for an opportunity to attack. When a number of Cahills are kidnapped it's up to Amy & Dan is rescue them. With few people they can trust Amy & Dan are forced to ask themselves just how far they're willing to go to defeat the Vespers.