Examining how and why the interview, which stunned the nation and threw the monarchy into a constitutional crisis, took place at all, as those who were there describe what happened in the room when the interview was recorded. It's been alleged that the reporter who delivered the scoop of the century, Martin Bashir, won the trust of the Princess through his use of fake documents, something the BBC has denied.

• Amanda Redman
• Kelvin MacKenzie
• Paul Burrell
• Andrew Morton
• Richard Ayre