Princess Diana's brother Earl Charles Spencer penned a memoir about her, "Swan Song." These are the book's most explosive claims.

In an exclusive interview with PEOPLE, Charles Spencer revealed the three times his older sister Princess Diana “physically lashed out” while discussing the release of his new memoir, ‘Swan Song: Diana,

Prince William and Prince Harry separately dodged questions about Charles Spencer’s new memoir about Princess Diana. Both royal brothers walked away without providing even a single-word answer. This

British monarch King Charles might be regretting his reaction to Princess Diana's brother Earl Spencer's claims about him as it has only fueled massive hype for the tell-all memoir that stormed shelves on Tuesday,

The brothers were separately asked about their uncle’s new memoir, “Swan Song: Diana, My Sister,” during public appearances on consecutive days

Amid genuinely touching passages about his sister, the earl can’t help but put himself and his grievances centre stage

In the days after Earl Charles Spencer plunged the British monarchy into its biggest crisis in years by alleging in a forthcoming book that King Charles said bitter things about Princess Diana after her death,

Who are Princess Diana’s siblings? All about Charles Spencer and her sisters, Jane and Sarah, and late brother John.

Princess Diana's younger brother, Earl Charles Spencer, who is releasing a memoir about his late sister this week, has been married four times, and wed Cat Jarman earlier this year