Nearly four years after the death of Britain’s sanctified People’s Princess comes this account of her transformation from well-bred, lovestruck schoolteacher to press-savvy public figure. Written by two television documentarians, and supplemented by interviews with past lovers, courtiers, friends, and family members, Diana purports to be a wholly unbiased work. And it does delve into the media spectacle that constantly buzzed around her and the image-crafting impulse that lurked behind her charitable deeds. Still, don’t expect any palace-shattering revelations: Did you know she was having an affair? And she didn’t get along with her in-laws! In the end, much of what emerges here seems like the confirmation of rumors.