Overgrowth by Mira Grant (Paperback)

Overgrowth is a body horror and alien invasion novel by Mira Grant. Since she was three, Anastasia Miller has insisted she is an alien disguised as a human and that the fleet that left her on Earth will return, though no one has ever believed her. Now a signal from the stars is being broadcast across the world, and humanity begins to realize it was warned long ago and may already be too late.