A lovely piece of historical fiction with elements of the psychological thriller.

Though the several early chapters of the book are a bit overdone with setting the historical scene of the action, it quickly becomes a page turning potboiler. I did ultimately greatly appreciate the heavy research both into the period as well as the background science underpinning much of the plot.

I'd put it easily in the realm of the works of Thomas Harris, Conan Doyle and others of the genre.