Masako Togawa (1931-2016) was born in Tokyo. Her father died when she was young, and she spent the rest of her childhood living with her mother, in an apartment building for single women, which provided the inspiration for the setting of The Master Key. After leaving school, she worked as a typist for some years, before stepping onto the stage as a cabaret performer in 1954. She soon began to write backstage during the breaks between her performances, and in 1962, her debut novel The Master Key was published, and won the Edogawa Rampo Prize. She went on to become a hugely successful crime writer, but continued to lead a colourful parallel life as a singer, actress, feminist, nightclub owner and gay icon. She died in 2016 at the age of 83.