Dr. Flint is Dr. James Norcom, Linda's master, enemy and would-be lover. J. F. Yellin, after researching his surviving private letters and notes, writes about his personality: "Norcom was a loving and dominating husband and father. In his serious and sophisticated interest in medicine, his commitment as a physician, and his educated discourse, he appears unlike the villain Jacobs portrays. But his humorlessness, his egoism, his insistently controlling relationships with his wife and children ... suggest the portrait Jacobs draws. This impression is supported by ... his unforgiving fury against those he viewed as enemies. It is underscored by his admitted passionate responses to women."