Add in parts of the country rendered unfit for human habitation by invisible aliens who return every few hundred years to kill people with spontaneous orgasms that melt their brains (The Searing, 1980), sinister cults occupying abandoned mental hospitals (The Turning, 1978), or isolated beachheads where Satan is growing killer humanoids in church basements (Effigies, 1980), and you might as well stay in the city and get murdered by the sewer alligators. (Keep reading.)