With the lives of their kidnapped relatives on the line, Amy and Dan are given another impossible request—steal a priceless map that’s been missing for more than half a century. As the body count rises, Amy and Dan start a frantic search across Europe and through one of the darkest periods of human history. However, the secrets they uncover about the Vespers are nothing compared to the most shocking discovery of all—someone thought to be dead seems very much alive . . .