Sixteen-year-old Penny Francone is a murderer. Will she be found not guilty by reason of insanity? Or will she get a life sentence in a maximum-security prison? Already reeling after the sudden passing of her beloved husband, Grace is grateful that Massachusetts doesn't allow the death penalty. As Penny awaits trial in a state mental hospital, she is treated by Dr. Mitchell McHugh, a psychiatrist battling demons of his own. Grace’s determination to understand the why behind her daughter’s terrible crime fuels Mitch’s resolve to help the Francone family. Together, they set out in search of the truth about Penny, but discover instead a shocking hidden history of secrets, lies and betrayals that threatens to consume them all.