The British royal family will be bracing itself for revelations from Harry’s memoirs which could plunge the monarchy into crisis.
Here we look at what some of those could be:
Family
With Britain's King Charles just weeks into his new role as head of state, his son Harry is likely to bring up their troubled relationship, airing potentially damaging matters.
Harry, in his interview with Oprah Winfrey, said Charles stopped taking his calls when he was trying to discuss stepping down as a working royal in 2019.
Father and son appear to have been at odds for some time and Harry could also discuss his strained bonds with his brother William who he has described as being on a different path.
“My father and my brother, they are trapped. They don’t get to leave. And I have huge compassion for that.” Harry told Winfrey during their televised interview.
He also appeared to agree with Winfrey’s suggestion the family were “jealous” of the positive public reaction to Meghan during the their tour of Australia and the south Pacific in 2018.
The Firm
In his memoir, Harry could also shed more light on his wife’s experiences within “the firm” as the royal family is sometimes known.
Meghan has spoken about how when pregnant with son Archie she contemplated suicide as she struggled to cope with life as a working royal, and how she received no help from the institution of the monarchy.
Harry’s most damning claim in recent years is that a member of his family – not Queen Elizabeth or her husband Philip – made a racist comment about his son.
The un-named royal was worried how dark the skin tone of Archie might be before he was born, and if identified in the book it would be very problematic for the royals.
Diana
One of the central issues for Harry is likely to be the break-up of his parents' marriage, Charles relationship with Camilla, and Diana’s death in a Paris car crash in 1997.
Harry and William have rarely spoken about how they coped as their parents’ marriage disintegrated in the 1980s and then became public knowledge in the early 1990s.
Harry has spoken of trying to block out the death of his mother, but his perspective of that period dubbed “the War of the Waleses” will open up old wounds for the family if he chooses to reveal his experiences.
Youthful indiscretions
It also remains to be seen if Harry will revisit his indiscretions when a young man, like his decision to go to a fancy dress party in the guise of a Nazi soldier from the Afrika Korps complete with swastika emblazoned on his arm, which caused widespread outrage.
As a 17-year-old he was also involved in under-age drinking and taking cannabis.
