Was Diana murdered? Was the British Royal family involved? Was she pregnant and engaged to Dodi? Did the paparazzi or "a blinding white flash" cause the crash? Was driver Henri Paul really drunk or were his blood tests switched?

Since Princess Diana died in Paris on 31 August 1997 there have been more questions than answers about the crash that killed her, despite lengthy official French and British investigations.

This is the authoritative and up-to-date study into the death of Diana, Princess of Wales, which includes unique access to Diana's close friends and bodyguards, French and British detectives who probed the crash, and the official French investigation's dossier into the crash.