About the book: 2016 / For five centuries, the Cahill clan has been guarding a terrible secret - thirty-nine components of a serum that can turn anyone into the most powerful person on earth. If the serum falls into the wrong hands, the world will be on the brink of disaster. Amy and Dan Cahill are the last keepers of the secret. It seemed that they had succeeded in the impossible - to unite the family, to prevent the end of the world. On their way, they made only one mistake... Now the recipe for the serum has been stolen. Amy and Dan must stop the thief at any cost. Otherwise, the apocalypse is inevitable.