FBI Special Agent Harper Denham, devastated by the loss of her relationship and her baby, flees Boston for a fresh start in Tennessee closer to her family. Desperate for success, happiness or even a glimmer of hope, Harper focuses her energy on her career and investigative work. But when mysterious and seemingly unrelated cases land on her desk, Harper unknowingly steps into a more treacherous situation than the one she left behind. With dangerous questions swirling around lost children, the mining industry, and new co-workers who may or may not be trustworthy and who may even be downright deadly, Harper realizes the peril is closer than she ever imagined.