In New York Times bestselling authorWendy Corsi Staub's electrifying new thriller, a mother races to save her daughter beforeher darkest nightmare comes true. Sacred Sisters Catholic girls' school has hardly changed since Jen Archer was a student. Jen hoped her older daughter would thrive here. Instead, shy, studious Carley becomes the target of vicious bullies. But the real danger at Sacred Sisters goes much deeper. The only person...