A Native in New York (Charlotte Holmes #9)

The Charlotte Holmes Tredecim - limited 13 book series.
A re-imagining of the Great Detective and his partner as Charlotte Holmes, a brilliant yet erratic polymath, and her companion as Dr Watan, an Indian doctor, as they investigate nefarious activities and conspiracies at the dawn of the 20th century.
Yankee Quartet - A Native in New York
New York, America 1922.
Charlotte is marrying her American fiancée, Randle Scott Warwick III, much to the annoyance of her daughter, Emily. As the Holmes clan gathers for the nuptials, a series of prostitute murders causes alarm in the city. They are reminiscent of earlier killings, committed in Whitechapel, London, by the infamous Jack the Ripper.
Emily falls into the clutches of a blackmailer and Branwell must use all his resources to restore her reputation whilst trying to make amends with his family.
A complication stalls the wedding and when the groom is implicated in a murder Charlotte and Dr Watan must use all their skills to solve the mystery of the new Ripper.
New World, but same old problems and mysteries as Charlotte & Dr Watan forge new relationships.