Princess Diana’s tragic death on August 31, 1997, remains one of the most hotly debated events in modern history. Despite official investigations ruling her passing as a result of reckless driving and a fatal car crash in Paris, conspiracy theories continue to circulate.
One of the most controversial claims suggests that Diana kept a secret diary—a document filled with explosive details about the royal family, their affairs, and secrets they never wanted exposed.
Investigative writer Alan Power, author of The Princess Diana Conspiracy, insists that Diana’s death was not an accident but a planned assassination. According to Power, the late Princess had compiled a detailed diary containing sensitive information, including intimate details about King Charles III’s personal life, his alleged affairs, and his long-standing relationship with Camilla Parker Bowles.
Diana reportedly started documenting her experiences after realizing her marriage was beyond repair. Her diary supposedly contained not only her grievances against Charles but also shocking claims about other royals.
One of the most controversial allegations in the dossier involved a senior royal engaged in a secret homosexual relationship with a male servant—something that, at the time, would have been considered a major scandal within the monarchy.
Power suggests that Diana planned to use this diary as leverage to gain full custody of her sons, Prince William and Prince Harry, should her battle with the royal family escalate. However, 18 months after she allegedly began keeping the diary, she was dead.
Power’s claims are not the only ones suggesting Diana’s death was premeditated. A former SAS soldier, known only as Soldier N, added fuel to the fire when he allegedly told his ex-wife that the accident was orchestrated.
According to reports, she later told detectives, “It was the time that Prince William was doing some sort of SAS training in cars. We were talking about how lovely it was that Prince William and Harry were doing so well and that their mum wasn't here to see it. Then [Soldier N] said one of the guys was responsible for the death of Diana. I was shocked. I believed what he said.”
Adding to the intrigue, a separate claim suggests that the British establishment was concerned about Diana’s relationship with Egyptian film producer Dodi Fayed. The couple had been romantically linked in the months leading up to her death, and some theorists argue that powerful figures disapproved of the idea of Diana marrying a Muslim man.
This theory was among those investigated by Operation Paget, the British inquiry into the Princess’s death.
Despite these claims, Operation Paget’s 2006 report found no evidence to support the theory that Diana was assassinated. The exhaustive inquiry concluded that her death was the tragic result of reckless driving.
Chauffeur Henri Paul, who was intoxicated at the time, was speeding through the streets of Paris while attempting to evade paparazzi. The loss of control led to the fatal crash in the Pont de l'Alma tunnel.
While Diana initially survived the impact and was reportedly conscious when pulled from the wreckage, she succumbed to her injuries later at the hospital. The official narrative places the blame squarely on Henri Paul’s impaired judgment and the aggressive pursuit by photographers.
Despite the official findings, speculation over the so-called secret diary persists. Power claims that the explosive document is still in existence, allegedly in the hands of a close friend of Diana’s. If its contents were ever published, he believes it could “endanger the monarchy.” However, to this day, no such diary has ever been made public, leaving its existence a matter of debate.
For many, Diana’s legacy is defined by her humanitarian work, her love for her sons, and her battle to navigate the rigid confines of royal life. But for others, unanswered questions surrounding her death continue to cast a long shadow.
The story of Diana’s secret diary adds yet another layer to the countless theories surrounding her passing. Whether it truly exists or is simply another piece of conspiracy lore, the fascination with her life—and her tragic death—shows no signs of fading.
