In a landmark documentary first, marking the 25th anniversary of the tragic car crash that killed her, multi award-winning investigative journalist and former police detective, Mark Williams-Thomas, embarks on a ground-breaking investigation into the death of Diana, Princess of Wales.
More than two decades on, the circumstances around Princess Diana's death continue to create international headlines. A global icon, arguably the most famous woman in the world, killed aged just 36, in a car crash in a Paris underpass.
Despite a verdict of unlawful killing and two police investigations into the devastating crash, many questions around what happened, and who is responsible, remain.
In this ground-breaking documentary, Royal Television Society and Peabody award-winning investigative journalist and former detective, Mark Williams-Thomas (The Investigator: A British Crime Story - ITV/Netflix), best known for sensationally exposing paedophile, Jimmy Savile, goes on an explosive journey to find the truth, confront the lies and uncover what really happened to Princess Diana.