London 1895 … the past returns to haunt Sherlock Holmes.

A murder with a distinctive signature suggests that Jack the Ripper may be back and no longer confining his attention to ladies of easy virtue. And is his return somehow connected to the charismatic Janus Cain and his Church of the New Apocalypse?

Is there, indeed, some master plan to bring an end to civilization as Victorian society knows it? Holmes and Watson set out to find the answer with the unlikely help of Oscar Wilde. But will they be in time to avert the Four Horsemen … Pestilence, Famine, War, and Death?