Reassigned to the Cold Case unit, Det. Tracy Crosswhite is immediately drawn to a case involving the disappearance of a five-year-old girl. As she begins reconstructing the timeline leading up to her disappearance, Tracy's former partner brings her in on an active investigation. Divided between two critical cases, Tracy has little to go on. Given her own traumatic past, she must also follow her instincts—to whatever dark and dangerous places they may lead.