Thirty-five years ago, Helen Brach walked out of the Mayo Clinic in Rochester, Minnesota, and vanished without a trace. By all accounts, the 65-year-old heiress to the E.J. Brach & Sons candy fortune was in good heath. But shortly after her leaving the clinic the details of Helen Brach's life—and presumed death—moved from fact to speculation, and they have been shrouded in mystery ever since.Who Killed the Candy Lady?: Unwrapping the Unsolved Murder of Helen Brach is...