Not often is a book about a film star more gripping than anything the star has played on the screen, but Barbara Leaming's biography has that distinction...Katharine Hepburn is Ms. Leaming's penetrating look beyond Ms. Hepburn's acting career and into the forces that shaped such an emblematic figure...Prodigious research has yielded a family history that is both revealing on its own terms and a necessary backdrop to any consideration of Ms. Hepburn's career. -Janet Maslin, The New York Times Book Review