Breakaway

Amy and Dan Cahill are on the run from the Vespers, a secret organization that is planning to launch a global attack. Amy and Dan must use all of their skills and resources to stay one step ahead of the Vespers and find the next clue to the 39 Clues, a collection of powerful objects that could be used to control the world.
Along the way, Amy and Dan learn more about the history of the 39 Clues and the true power they possess. They also meet a number of interesting characters, including a former Vesper agent and a group of international spies.
Breakaway is a thrilling adventure story that will keep readers on the edge of their seats. It is a great read for fans of mystery, suspense, and action.