Prince Harry's confessional book, "Spare," which will be released on January 10, is quite tame in its treatment of Prince Charles, as is the Netflix six-part documentary "Harry & Meghan." (As Marie Claire magazine reported, Prince William is not treated well in the book or in the documentary.)

A source familiar with Harry's book told The Sunday Times (open in new tab), "The book is a very good look at Prince Charles. Everything is being laid bare. Charles turned out better than I expected, but it has been particularly tough for William." [As "Marie Claire" previously reported, Charles holds the authority over whether to grant permanent HRH titles to Harry and Meghan Markle's children Archie and Lilibet. (He is reportedly waiting until after the release of "Spare" to make a final decision.) He also holds the key to whether Harry and Meghan will return to office as part-time royals, which could influence the couple's decision on whether to be kinder to him than others in the royal family in "Harry & Meghan" and "Spare". However, according to a source in The Sunday Times, regarding Harry's relationship with his brother William, "Personally, I don't think Harry and William will be able to reconcile after this."

Nevertheless, Prince Charles may not be completely irrelevant. According to The Sun, Harry "has tried not to criticize his father, Prince Charles, too much," but the King "could face scrutiny if Meghan decides to tell her story next year." According to the paper, Meghan is said to be "considering telling all candidly about her time in the royal limelight" in her memoir, and one source told OK, "She intends to write the book and will leave no stone unturned. The only question is timing, and how long she wants to hold out to preserve Prince Charles' and Harry's remaining relationship"

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The source continues, " The feeling at this point is that she has little to lose and she may as well move on. The process is already quietly underway."

Following Harry & Meghan, Spare, and Meghan's possible confessional book, a Hollywood executive tells the Daily Mail that the Duke and Duchess of Sussex are in danger of becoming overexposed. If I were to give her advice, I would advise her not to publish a book too soon." Because there is a very high risk that she will begin to experience "Sussex fatigue."

The source continues. "People may feel they've heard the same story too many times. At some stage the narrative has to change and focus on the future rather than the sins of the past."