When an eleven-year-old is abducted on her way to school, the FBI doesn’t waste a moment, sending agents to scour the area and embedding Special Agent Ava McLane with the distraught family. In the eye of the storm is local detective Mason Callahan, whose life is crumbling to pieces - he’s related to the victim, and his longtime confidential informant has just been murdered.

FBI special agent Mercy Kilpatrick has been waiting her whole life for disaster to strike. A prepper since childhood, Mercy grew up living off the land — and off the grid — in rural Eagle’s Nest, Oregon. Until a shocking tragedy tore her family apart and forced her to leave home. Now a predator known as the cave man is targeting the survivalists in her hometown, murdering them in their homes, stealing huge numbers of weapons, and creating federal suspicion of a possible domestic terrorism event.

Eleven years ago, the Co-ed Slayer murdered nine female students on the Oregon State University campus. Lacey Campbell barely escaped his attack, but lost her best friend whose remains were never found. As the sole surviving victim, Lacey helped send the sadistic serial killer to prison for life. Now a forensic odontologist examining teeth and bones for the state Medical Examiner, Lacey is devastated when she arrives at a crime scene and identifies the skeletal remains as her college friend’s.

Twenty years ago Emily Mills's father was murdered, and she found his body hanging in the backyard. Her younger sister, Madison, claims she was asleep in her room. Her older sister, Tara, claims she was out with friends. The tragedy drove their mother to suicide and Tara to leave town forever. The killer was caught. The case closed. Ever since, Emily and Madison have tried to forget what happened that night - until an eerily similar murder brings it all back.

After the devastating loss of her husband in Iraq, Morgan Dane returns to Scarlet Falls, seeking the comfort of her hometown. Now, surrounded by family, she’s finally found peace and a promising career opportunity - until her babysitter is killed and her neighbor asks her to defend his son, Nick, who stands accused of the murder.