Title: Femme Fatale by Carole Nelso Douglas
Description / Synopsis:
Irene Adler is the only woman to ever have outwitted Sherlock Holmes... and the one who has come closest to stealing his heart.
She has competed (and sometimes cooperated) with the famous fictional detective over six popular and acclaimed novels, featuring her daring investigations across the Continent. All along, the beautiful and brilliant American diva-turned-detective has managed to conceal her background and history, even from her dashing barrister husband Godfrey Norton and her devoted friend and biographer, English spinster Nell Huxleigh.
Irene's past is shrouded in secrecy-but a series of bizarre killings in New York City draws her reluctantly back to her native country, where she must race with a murderer to find her mother, a woman of mystery who may turn out to be the most notorious woman of the nineteenth century.
As Irene forges a trail into her own hidden past, Nellie Bly draws another ace investigator across the Atlantic to join in the hunt for a serial killer, the last man on earth Irene Adler wants to discover anything about her shocking past... Sherlock Holmes.
Condition: Good+, Some wear on the dust jacket
Amy, Dan, and their au-pair, Nellie Gomez, found music by Wolfgang Amadeus Mozart in the end of The Maze of Bones, leading them to Vienna, Austria, to learn about him and find a related clue : Tungsten. They also found a Japanese sword there, so they went to Japan in book 3.