Kate Middleton and Prince William are upset over Prince Harry's comments in his memoir, "Spare."

Harry accused William of physical abuse in 2019 and revealed details about Kate's relationship with Meghan Markle.

Kate is furious with Harry for betraying his family and breaking confidences by speaking out.

Harry's book "Spare" is the fastest-selling nonfiction book ever released, selling 1.4 million copies on its first day.

Kate hopes King Charles III will respond to Harry's book but recognizes the necessity of remaining silent.

Prince William and Kate are "sick to their stomachs" over the fallout from Harry's memoir.

Since retiring in January 2020, Harry and Meghan have spoken out about royal life.

"Harry and Meghan," a Netflix docuseries, covered their royal lives.

Harry's book discusses growing up in the public glare, Meghan's treatment, and their retirement as working royals.