Something sinister is happening in Crooked Oak ... Ever since the fracking site closed, Nancy's parents have been acting weird. Their eyes are blank, they won't eat - it's like they're no longer themselves. And now the symptoms are affecting others as well ... Nancy and her friends Pete and Krish are determined to find out what's going on. But the deeper they dig, the scarier the mystery gets. A dark presence is spreading its tendrils across Crooked Oak. Can they stop it before it takes over the whole town?