But in this explosive film, biographer Anne Sebba sifts through a newly discovered cache of documents - shown in this film for the first time - that contains 15 secret letters written by Wallis Simpson herself around the time of the abdication.
These extraordinary personal missives have the power to rewrite both history and our perception of Wallis. They reveal she was deeply in love with another man, and chart her fear, desperation and loneliness as she found herself becoming trapped into marrying the man who should have been king.
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