When criminal psychiatrist Dr. Madeline Pine is called to help investigate a mysterious death at a boarding school for troubled girls, Madeline hesitates. Yet she can't turn away when she hears about Charley Ridley. After the girl was found shoeless and in pajamas at the bottom of an icy ravine on campus, the police ruled it a tragic accident. But the private investigator hired by her mother has his doubts. Arriving at the secluded campus in upstate New York, Madeline is met by an unhelpful skeleton staff and the four other students still on campus during winter break. Everyone has secrets - Madeline included. But who would kill to protect them?