Prince Philip 'Wasn't Fooled' by Princess Diana Secretly Working With Biographer in 1992: 'He Was Not Impressed'

Prince Philip didn't believe Princess Diana had no part in author Andrew Morton's 1992 biography, Diana: Her True Story.

While the book based on the Princess of Wales' life was written entirely by Morton, she sent him audio tapes of herself orating her experiences aloud for him to scribe down.

The book was released six months after Diana and the then-Prince Charles announced their decision to divorce. In Hugo Vickers' new biography about Queen Elizabeth, Philip wasn't hoodwinked into thinking Diana didn't participate.

“It seems almost incredible that so many people accepted Diana’s denial of any involvement in the book," Vickers wrote.

“One person who wasn’t fooled, though, was Prince Philip, who read the book on flights to and from Canada in July and clearly detected her hand in it,” he added. “Feeling that too much had been revealed, he was not impressed.”

While Diana and Charles, 77, had “a sticky meeting at Windsor” with the Queen and the Duke of Edinburgh at the time to fix the status of their broken marriage, the monarch “maintained her neutrality.”

However, Philip penned letters to Diana in the summer of 1992 in an attempt to help save the Wales' relationship.

“It was clear that he really cared," Vickers wrote. But when “one or two phrases from his correspondence with Diana popped up in the press," Philip grew anxious.

“This made him worry that every time there was a private discussion between Charles and Diana, details would appear in the Daily Mail,” he said.

“Within a month of Diana’s death, Andrew Morton exposed to the world the full extent of her cooperation with his book,” Vickers said. “Prince Philip had been right all along.”

Vickers also revealed in his bombshell biography that Philip suffered from pancreatic cancer for the last eight years of his life. The Greek-born royal died in April 2021 and was diagnosed with the disease in 2013.

"Doctors had detected a shadow on his pancreas, and had cut him right across his stomach,” he penned. “The verdict was inoperable pancreatic cancer.”