[2][4] Smith interviewed nearly 150 people whose reports are used in the book to narrate the life of the Princess.

[7] The most significant claim made in the book is that the Princess had suffered from borderline personality disorder.

[9] The book was included in the best seller lists of the following: The New York Times Book Review, The Washington Post, The Wall Street Journal, USA Today Top 50, The Boston Globe, Los Angeles Times, Newsday, Barnes & Noble and Publishers Weekly.

[10] Linda L. Richards of the January Magazine stated that the book provides an unbiased and balanced portrait of the Princess.

"[10] On the other hand, the author was criticized by Dorothy Packer-Fletcher because of her claim that Diana had been experiencing borderline personality disorder.