About the book: 2015 / Dan and his older sister Amy continue to fight for the lives of their relatives, kidnapped by a mysterious and powerful group of Vespers. New searches lead them first to Yale University, and then to Brazil. The next task seems completely unthinkable: to find the missing page of a mysterious ancient manuscript, which the best minds of the whole world cannot decipher. But the closer to the end of the game, the more confusing and dangerous it becomes. In addition, Amy and Dan discover that there is a traitor on their team…