"Cassie Iverson, eighteen years old, lives in the United States in the year 2014--but it's not our United States and it's not our 2014. Cassie's world has been at peace since the Great Armistice of 1914. But Cassie knows the world isn't what it seems. Her parents were part of a group who gradually discovered the awful truth: that for decades--back to the dawn of radio communications--human progress has been interfered with, made more peaceful and benign, by an extraterrestrial entity. Cassie's parents were killed for this knowledge, along with most of the other members of their group. Cassie and her younger brother Thomas now live with her aunt Nerissa, who shares these dangerous secrets. For seven years they have attempted to lead unexceptional lives in order to escape detection. The tactic has worked. Until now. Because the killers are back. And they're not human"--