In Swan Song: Diana, My Sister, a memoir by Charles Spencer, 9^th Earl Spencer  about his sister Lady Diana Spencer. Diana became the Princess of Wales when she married Charles III, then heir to the British throne. The book published by Michael Joseph an imprint of Penguin Random House, and released simultaneously in the United States and Canada ahead of the 30^th death anniversary of Diana in August 2027 and translated into 12 languages.

The memoir chronicles their childhood including their upbringing at the Spencer family estate, their parent’s divorce. It examines Diana’s marriage to Charles, her rise to global prominence, her humanitarian work, and the media scrutiny surrounding her personal life.

Spencer said that he had been convinced to “write down my own thoughts and memories, once and for all, rather than having the discomfort of again reading the opinions of others, many of which are based on untruths that have become accepted over time”, and that he aimed to tell “the truth” about Diana from his perspective as her brother and to speak on her behalf in an “openly positive way”, as he did when he delivered the eulogy at her funeral at Westminster Abbey in 1997. Diana, he described his sister as “a one-off, dynamic character, full of love, charisma and self-doubt, who gave life a hell of a go, and left the world a far better place, despite exiting the stage while still so young”.

Back in September 1997, Spencer stood in Westminster Abbey before a record world watching and shared his grief at losing his beloved sister Diana. Now after thirty years later, he tells the astonishing story of his life with Diana and the tragic week of her death.

In childhood, Charles and Diana, the youngest Spencers, were inseparable- secretly calling one another Duch and Carlos. As each other’s closest confidantes they roamed the family estate, endured extremely challenging boarding schools, survived terrifying nannies, and helped each other through the agony of their parents’ divorce.

Everything changed when Diana married the Prince of Wales, now King Charles III, and overnight became a global icon. Charles saw his older sister serve the world’s marginalized and relish being mother to her treasured sons. But Pursued by a barbaric press as her royal marriage crumbled, she was left desperately alone. Charles always tried to be there for Diana- until that black night in August 1997.

Swan Song: Diana, My Sister by Charles Spencer, Michael Joseph an imprint of Penguin Random House Press, £30/ $35, 384 pages.