Prince Harry's 'eyes narrowed' in furious spat as writer feared 'it could all end here'

Moehringer has lifted the lid on a furious argument he had with the royal as they went over the final edits of the book in the summer of 2022.

He said that during a late-night Zoom session to review a tricky section of the book, his frustration with Harry reached boiling point.

Moehringer told The New Yorker: "My head was pounding, my jaw was clenched, and I was starting to raise my voice."

He continued: "And yet some part of me was still able to step outside the situation and think, this is so weird.

"I’m shouting at Prince Harry.

"Then, as Harry started going back at me, as his cheeks flushed and his eyes narrowed, a more pressing thought occurred: Whoa, it could all end right here."

The argument was over whether to include the Duke of Sussex's comeback to a dig made by pretend terrorists at the end of a period of military exercises.

Moehringer said he spent months crossing out the comeback, with the royal repeatedly adding it back in.

Following the clash, Moehringer said that they locked eyes, at which point Harry accepted that the line should not be included in the book.

He added that Harry showed him "a mischievous grin" and said: "I really enjoy getting you worked up like that."

Prince Harry's autobiography sold a record number of copies for a non-fiction book in the UK during its first week.

The memoir sold 750,000 copies across all platforms during its first seven days on sale.

Spare rose to the top of the books charts having sold 467,183 print copies which was a domestic record.