Peyton Shields had always wanted to be a doctor, and now, thanks to her relentless drive, stellar academic credentials, and a mountain of debt to Harvard Medical School, shes a first-year resident at a major Boston childrens hospital. The hours are impossibly long but its the life she wants, complete with a husband whos an up-and-coming young lawyer.But a late-night drive home in a heavy snowstorm changes everything. A car coming straight at her drives her off the road and into a frozen pond. Peyton knows shed be dead if a stranger hadnt pulled her from the wreckage before vanishing into the darkness. In an instant her wonderful life has turned dark. No one believes her claims that the accident was deliberate—not even her husband. Without explanation, he has become distant and bitter, calling her paranoid and accusing her of having an affair with a former lover.