As head of Black Oak Investigations, Ethan Proctor is careful about what he says, what he does, and who his clients are. But when a letter arrives from an old female acquaintance, begging him to investigate the strange goings-on in her town, he gets careless. Without thinking, he travels to the heart of Kansas and a dusty old town where a seemingly friendly cult has recently arrived -- all women, concerned, and cooperative.But if that's the case, why are the, townspeople so afraid? And why are so many people missing? And, Proctor wonders, what are those strange winged creatures circling the sky above town?