Prince Harry's Fury Files: How 'The Lost Prince' 'Catalogs and Remembers All Slights Against' Him for 'Legal Action' Purposes

Team Sussex may want to avoid tuning into Harry — The Lost Prince, a new German documentary, which paints a less-than-flattering portrait of Prince Harry and Meghan Markle's life in California.

One tidbit being highlighted is the Duke's penchant for "cataloging and remembering all the slights against him and his wife in the media," in the words of one Hollywood insider.

The film delves into their struggles for relevance following their royal exit in 2020 and delivers bombshells that are "bound to leave the couple squirming," the source said.

From Meghan’s tour wardrobes, slammed as "inappropriate," to criticism of their "carefully orchestrated" trips, the documentary doesn’t hold back. Even their Montecito neighbors reportedly didn’t mince words, accusing the couple of "not being an asset" to the community. A former friend also took aim at Harry’s public grievances about his family, dismissing them as "whinging."

Royal commentator Duncan Larcombe, speaking exclusively to Daily Mirror, revealed how the Sussexes might respond. "Once upon a time, one of the things that surprised me about Harry when we covered him in much happier times was that he did seem to read or get briefed on pretty much everything written about him. He wore his heart on his sleeve and would often get angry about stuff that was inaccurate or unfair," he noted.

Larcombe suggested legal action could be on the table, stating, "I think there’s every chance one of them or their staff might look at it to see if there’s anything in it where they can take legal action — which seems to be their tactic these days."

The film arrives during a delicate period for Harry’s ties to the royal family.

"It’s hard to say if the documentary will impact Harry’s relationship with the royals because there are signs that things might be thawing," Larcombe stated.

He pointed out Harry’s relatively quiet demeanor since the release of his memoir Spare in January, highlighting a brief meeting with King Charles III as a positive step.

However, the author warned, "It would be a real shame if the documentary put those possibilities of a thawing in the relationship back a peg or two."

The couple’s popularity has taken a nosedive since leaving the U.K., and the scribe fears this documentary will only deepen the damage.

"I think any documentary that continues the criticism of Harry and Meghan’s modus operandi is going to be damaging. It’s in Germany, so it’s probably not going to make a big storm over in the U.S., but it’s still a major blow for a couple who have seen their popularity plummet like a stone falling in a well," he remarked.

The Sussexes' battle for public favor continues, but Harry — The Lost Prince is unlikely to help their cause.