A spellbinding novel about a troubled young girl and a family in crisis, and a gripping, astonishing portrait of recovery and self-determination.When December opens, eleven year old Isabelle hasn’t spoken a word in nearly a year. Four psychiatrists have abandoned her, declaring her silence to be impenetrable. Her parents are at once mystified and terrified by their daughter’s withdrawal, and by their own gradually loosening hold on the world as they’ve always known it. Isabelle’s private school, which has until now taken the extraordinary step of allowing her to complete her assignments from home, is on the verge of expelling her, forcing her parents to confront the possibility that what once seemed a quirk of adolescence, a phase, is perhaps a lifelong transformation, a swift and total retreat from which their daughter may never emerge.