Darkness on the Edge of Town

One morning the residents of Walden, Virginia, woke up to find the
rest of the world gone. Just . . . gone.
Surrounding their town was a wall of inky darkness, plummeting Walden
into permanent night. Nothing can get in - not light, not people, not
even electricity, radio, TV, internet, food, or water. And nothing can
get out. No one who dared to penetrate the mysterious barrier has ever
been seen again. Only their screams were heard.
But for some, the darkness is not the worst of their fears. Driven mad
by thirst, hunger, and perpetual night, the residents of Walden are
ready to explode. The last few sane prisoners of this small town must
prepare a final stand against their neighbors, themselves, and
something even worse . . . something out there . . . in the darkness .