I recommend reading this book before watching the PBS Masterpiece Theater series "Lillie". That series is about Lily Langtry, a friend of Oscar Wilde's. This play represents a betrayal of their friendship, as the characters Mrs. Erlynne & Lady Windermere reference Ms. Langtry and her secret daughter. Langtry was angry, rejected Wilde as a friend, he fell out of favor in English society, and was soon after prosecuted for homosexuality. Langtry's good fortune faded too, though less quickly. They did ultimately reconcile, but damaged each other's reputations and quality of life in the process. An interesting story and the play itself is filled with classic Wilde quotes.