Mary used to be such a nice girl. She was the resident whiz kid of Liberty Lake, Minnesota --- the quiet, chubby teen with the scholarship to an Ivy League school. But three years later, “Ivy League Mary” is back --- a thinner, cynical, restless failure who was kicked out of Cornell at the beginning of her senior year and won’t tell anyone why. Then rising social media star Olivia Willand goes missing. Once Olivia’s best friend, Mary knows better than anyone that behind the Instagram persona hides a willful, manipulative girl with sharp edges. As the town obsesses over perfect, lovely Olivia, Mary wonders if her disappearance might be tied to another missing person: 19-year-old DeMaria Jackson, whose case has been widely dismissed as a runaway.