Wallis Simpson: The Secret Letters charts Wallis’s story with dramatic depictions of the key moments in her relationship with Edward. From her shameless climbing of the social ranks to meet the Prince of England at a party in 1931 to becoming his lover with the complete complicity of her then husband Ernest.

The film reveals how Wallis enjoyed the riches and trappings of a royal mistress believing them to be short-lived – that she would easily be replaced one day. However, these assumptions were shattered when King George V died and Edward made it clear he wished to marry Wallis at any cost – even threatening suicide when she suggested ending their affair. So Wallis divorced her husband – but as both Wallis’s and Ernest’s private letters make clear, theirs was an illegal divorce – conducted with collusion between both of them and the King of England.