Sarah Grand's dual novel of the diabolically mischievous twins Diavolo and Angelica and the coming of age of nineteen-year-old Evadne valiantly explores subjects considered taboo for a female writer of the Victorian age. Through her characters, Grand, considered one of the "New Woman" writers of the late 1800s, courageously advocated "rational dress," financial independence, personal fulfillment over marriage and motherhood, and the freedom of women to initiate sexual relationships outside of wedlock and to openly discuss such volatile sexual topics as a woman's right to contraception. She was one of the first to explore the complexity of gender roles and their inherent constraints.