This is the first proper biography of Diana, Princess of Wales, as opposed to memoirs by former employees (Jephson, Wharfe, Burrell) or more or less ax-grinding efforts by journalists (Morton, Seward, Junor). Bradford, an experienced biographer, has produced a sound and workmanlike book, and without sacrificing balance or accuracy or contending that the late princess was a flawless biped makes the best pro-Diana case to date.
After reading Bradford it is hard to deny that the Royal Family and their courtiers, the British Establishment, and especially the Prince of Wales entered into this marriage in deeply bad faith, and covertly slandered Diana when it turned sour. Clarence House trotted out Princes William and Harry to denounce Jephson, Wharfe and Burrell as traducers of their mother's memory; it would be interesting to hear their spin on Bradford's far more (justly) damning portrayal of their father.
Naturally this book relies more on oral interviews than archival research, and (with the occasional and unavoidable exception "Private information") Bradford plays fair with the reader in revealing her sources. She singles out Burrell for skepticism, perhaps reasonably, but otherwise appears to take a very trusting attitude to equally debatable sources (showing indulgence to Jephson, Wharfe, and - surprisingly - James Hewitt). I would like to believe that this favoritism was on their merits and not due to the fact that (judging from the notes) Jephson, Wharfe and Hewitt agreed to be interviewed by Bradford and Burrell didn't.
One Bob Woodward is enough.
My first reading of this book revealed two errors. Nicholas Soames, one of Diana's least savory detractors, is said to be Sir Winston Churchill's great-grandson; he was his grandson. Bill and Hillary Clinton are listed as attending Diana's funeral; the Senator attended but not the President. Neither of these is a hanging offense, but both should have been corrected in the editing process, and one wonders what other, less obvious errors are present. This is too good a book to be disfigured by such petty mistakes.