This biography investigates the private life and professional development of Agatha Christie, the world's most successful mystery novelist. Janet Morgan, granted unprecedented access to private family papers and protected archives, constructs a comprehensive portrait of the woman behind the iconic detective stories. The narrative examines how Christie's personal experiences, social environment, and internal motivations shaped her prolific output and enduring literary legacy.

This work is widely regarded as a definitive and meticulously researched account of Christie's life, praised for its scholarly rigor and access to primary sources. The text provides a balanced, objective look at the author's private world, making it a standard reference for those interested in the history of detective fiction.