Gabriel Thane is the sheriff and lifetime resident of Carin County Illinois, committed to upholding the law and keeping the residents safe. Lieutenant Evie Blackwell is a State Police Detective skilled at investigations. She launches a new task force to reexamine unsolved crimes across the state. She begins work with the sheriff's department on a few of its most troubling missing-persons cases, a deputy, his wife and eleven-year old son's disappearance, and in an unrelated case involving a six-year-old girl abducted from a hotel. As she examines old evidence, she finds a connection to a third cold case.