An engineer from out of town disappears.Then Conor Mitchell's girlfriend. Then his parents. The townspeople of Sedrow Woolley, Washington are vanishing at a horrifying rate. But they come back. They all come back days later, and they're different: Hungry. Insectile. Creatures posing as humans. Because Conor knows the truth, and because the entire police force has already been changed, and because there's nowhere to run from an evil that only wants to spread, his sole option is to fight. But they have no intention of letting him leave town.