Christie Tate had just been named the top student in her law school class and finally had her eating disorder under control. Why then was she fantasizing about her own death? Why was she envisioning putting an end to the isolation and sadness that still plagued her? Enter Dr. Rosen, a therapist who calmly assures her that if she joins one his psychotherapy groups, he can transform her life. All she has to do is show up and be honest. So begins her...

One day in 2009, twenty-four-old Susannah Cahalan woke up alone in a strange hospital room, strapped to her bed, under guard, and unable to move or speak. A wristband marked her as a "flight risk," and her medical records, chronicling a monthlong hospital stay of which she had no memory at all, showed hallucinations, violence, and dangerous instability. Only weeks earlier, Susannah had been on the threshold of a new, adult life, a healthy, ambitious...