The grisly serial killings of prostitutes and vulnerable ladies in Victorian Whitechapel, dubbed by the popular press as the work of ‘Jack the Ripper’ are the talk of London, and from deep within the smog-ridden slums, just one more piercing shriek is heard. Sherlock Holmes and Dr John H. Watson are attracted into one of the darkest plots ever to tremble the foundations of Britain. There are freemasons, conspiracies and plots at the highest degree of the establishment. But also for Holmes, there’s a exclusively personal element to this new and terrifying case…