Sherlock Holmes must compete with Irene Adler to see who is truly London's Greatest Detective.

See where it all began for Sherlock Holmes in the prequel adventure picking up after the Reichenbach Falls event.

"Joanna Blalock's keen mind and incredible insight lead her to become a highly-skilled nurse ... When she and her ten-year-old son witness a man fall to his death, apparently by suicide, they are visited by the elderly Dr. John Watson and his charming, handsome son, Dr. John Watson Jr. Impressed by her forensic and deductive skills, they invite her to become the third member of their deductive team. Caught up in a Holmesian mystery that spans from hidden treasure to the Second Afghan War of 1878-1880, Joanna and her companions must devise an ingenious plan to catch a murderer in the act while dodging familiar culprits, Scotland Yard, and members of the British aristocracy"--

Irene Adler is the only woman ever to 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 companion and biographer, English spinster Nell Huxleigh. But she has had some help along the way to do this, from such unlikely sources as the Baron de Rothschild, Sarah Bernhardt, and Bram Stoker, as well as the soon-to-be-infamous Nellie Bly, a daring American journalist who helped Irene hunt Jack the Ripper. Now Nellie has wired Irene some astounding news, news that will shake her world: Irene's mother is the target of an assassin. Irene's past is shrouded in secrecy, and at first she is unwilling to divulge anything that would link her to America. 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. At the Publisher's request, this title is being sold without Digital Rights Management Software (DRM) applied.

They say he is the son of Sherlock Holmes...The author of The Fall and the Dismas Hardy and Wyatt Hunt series takes us to a small French town in the dark days of World War I. The “reliably excellent”* New York Times bestselling author offers an engrossing historical mystery in which the rumor is that young chef Auguste Lupa is the son of the greatest detective of all time. And his mysterious legacy may come to light as he attempts to solve the baffling murder of an intelligence agent… *Publishers Weekly

It will take every bit of intuition and deductive reasoning you can muster to solve the cases in this one!