“[Shirley Ardell] Mason was the real person behind the 1970s best seller ‘Sybil,’ which sold 6 million copies with its riveting account of an abused woman inhabited by 16 different personalities. Sally Field won an Emmy for her 1976 portrayal seen by 20 percent of the nation. “In the process, Mason popularized the condition known as multiple … Continue reading ‘Sybil’ came clean, but psychiatrist wasn’t interested