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's too naïve and rebellious for her own good. Her worries are well-founded because one day Beth vanishes, prompting...