When Jennifer Brady returns to Northern Arizona University for her sophomore year, she quickly becomes a big sister to her new roommate, Beth Rankin, a brilliant yet sheltered sixteen-year-old freshman. For a homeschooled Beth, college is her first taste of both freedom and unfettered access to the internet, and Jenny is concerned that she is too naive. With Beth at war with her parents, Jenny asks to invite Beth home for Christmas, and Sheriff Joanna Brady says yes. After all, what could go wrong? Within hours, however, Joanna's department is sucked into a complex officer-involved shooting that places two vulnerable young children in jeopardy. When Beth disappears while visiting over Christmas vacation, Joanna finds herself in a case fraught with landmines. With her own daughter's well-being at stake, the seasoned sheriff knows there's no room for the slightest mistake as hope ticks away for a fragile young girl who has gone missing and endangered.