London: Prince Harry's memoir ‘Spare’ officially goes on sale next week but much of its contents have already been leaked in British and US media.
The Spanish-language version of the memoir went on sale in bookstores in Spain on Thursday, days ahead of its official launch date.
The book reveals details about Harry's relationship with his father, King Charles, his elder brother, Prince William, and other members of the British royal family that have never previously been published.
Here are some of the notable details.
Harry claims his older brother Prince William attacked him during an argument about his wife Meghan.
"He grabbed me by the collar, ripping my necklace, and he knocked me to the floor," he writes in the book, according to The Guardian.
"I landed on the bowl, which cracked under my back, the pieces cutting into me. I lay there for a moment, dazed, then got to my feet and told him to get out."
Fight over wedding venues
Harry claims the royal household dragged its feet over the date and venue for his wedding with Meghan.
He says that when he consulted his brother about the possibility of marrying in Westminster Abbey or St. Paul's Cathedral, William said he could not marry there because they had been venues for the weddings of Charles and Diana and of William and Kate respectively.
Instead, William suggested a village chapel near Charles' home at Highgrove House in the Cotswolds, southwest England. Harry and Meghan finally got married at St George's Chapel, Windsor Castle, in May 2018.
Harry refers to William as his "beloved brother and arch-nemesis".
"There has always been this competition between us, weirdly," he explained in an interview with the US television show "Good Morning America" set to air next Monday.
"I think it really plays into, or is played by, the 'heir/spare' (issue)," he added, referring to his traditionally diminished royal role compared to William, who is first in line to the throne.
The brothers' father, King Charles III, pleaded with his sons to stop fighting at a meeting after the funeral of his father, Prince Philip, in April 2021.
"Please, boys. Don't make my final years a misery," he told them, according to the memoir.
Harry also describes the "secret meeting" as resembling a duel rather than reconciliation.
William claimed he did not know why Harry had exiled himself in the United States, Harry writes, while his father "was looking at me with an expression that said, 'me neither'".
Harry reveals that Charles used to joke about whether he was really his father.
"Who knows if I'm really the Prince of Wales? Who knows if I'm even your real father?" Harry writes, according to The New York Post.
"He'd laugh and laugh, though it was a remarkably unfunny joke, given the rumour circulating just then that my actual father was one of Mummy's former lovers: Major James Hewitt."
Harry's mother, Princess Diana, had a five-year affair with Hewitt, an ex-cavalry officer, which gave rise to persistent speculation that he could be Harry's father.
Noting that Hewitt has similar "flaming ginger hair", Harry lambasts the claim as driven by tabloid "sadism".
"My mother didn't meet Major Hewitt until long after I was born," he notes.
'Heir and spare'
Harry writes in the book about his father's delight when Diana gave birth to a so-called "spare" in 1984.
Charles supposedly told his wife that Harry's arrival meant she had now given him both an heir and a spare - and that his work was done.
Harry states that he and William "begged" their father not to marry Queen Consort Camilla, with whom Charles was having an affair while married to their mother.
He recounts that the brothers said they would not stand in the way of Charles' relationship with her, but asked that they did not marry.
Harry also details how he felt when meeting Camilla for the first time, likening it to having an "injection".
"I remember wondering... if she would be cruel to me; if she would be like all the wicked stepmothers in the stories," he writes.
'Your mother is with you'
Harry recounts seeking help since moving to California from a woman who "claimed to have 'powers'" and an ability to relay messages from the dead.
The Duke of Sussex does not describe her as a psychic or medium but writes that he felt "an energy around her" as soon as they met.
"Your mother is with you... right now," he says the woman told him. Harry says his neck grew warm and his eyes watered.
"You're living the life she couldn't. You're living the life she wanted for you," she said.