When the fingers of dead women start showing up in the Supreme Court’s mail, ex-FBI Agent Jeremy Winter is brought back to the Bureau to aid in the investigation. Agent Maggie Keeley, his girlfriend and now boss, leads the search for the serial killer. Together, Jeremy and Maggie learn the five remaining cities on the murderer’s list, but they have no idea when the killer will strike or whom he will target. When they stumble upon a clue at the scene of a young woman’s death, the case focuses on an abandoned ramshackle home in sparsely populated west Texas. 

Three years ago, a collision between a fast-moving freight train and a school bus full of kids led to devastation and grief on an unimaginable scale. But a fresh clue leads San Antonio police detective Amara Alvarez to the unlikely conclusion that one of the children may still be alive. If she's correct, everything law enforcement believes about the accident is a lie. 

Retired FBI agent Jeremy Winter spent his career chasing serial killers. Now, he finally has a chance to go after the one murderer who matters most - the killer of his wife and unborn daughter. With few clues and nowhere to start, Jeremy tests the legal limits of his investigation, risking arrest and angering his FBI agent girlfriend Maggie Keeley. His determination to find the killer leads him on a twisting path of weak leads and strong doubts.

Penelope Hunter loves her job as the events manager at one of Savannah's premier historic venues - until her ex-fiance walks into her office with his new bride-to-be. To make matters worse, a scheming social matriarch is intent on seeing Penelope fired, especially if she insists on being seen with Tucker Westbrook. Since returning from serving two tours in the Middle East, Tucker has built a thriving security company. His work is nearly as stabilizing as his friendship with Penelope, who has been by his side since childhood. 

Ten years ago, Grace saw something that would forever change the course of history. When evil in its purest form is unleashed on the world, she and others from their religious community are already hidden deep in the hills of Tennessee, abiding by every rule that will keep them safe, pure - and alive. As long as they stay there, behind the red perimeter. Her older brother's questions and the arrival of the first outsiders she's seen in a decade set in motion events that will question everything Grace has built her life on.