The enemy is Other. The enemy is us. They're down here, they're up there, they're nowhere. They want the Earth, they want us to have it. They came to wipe us out, they came to save us.
But beneath these riddles lies one truth: Cassie has been...
How do you rid the Earth of seven billion humans? Rid the humans of their humanity.
Surviving the first four waves was nearly impossible. Now Cassie Sullivan finds herself in a new world, a world in which the fundamental trust that binds...