All Fall Down (Embassy Row #1)

Grace can best be described as a daredevil, an Army brat, and a rebel. She is also the only granddaughter of perhaps the most powerful ambassador in the world and Grace has spent every summer of her childhood running across the roofs of Embassy Row.. Now, at age sixteen, she's come back to stay - in order to solve the mystery of her mother's death. In the process, she uncovers an international conspiracy of unsettling proportions, and must choose her friends and watch her foes carefully if she and the world are to be saved.