As a spate of ritualistic murders terrorises late-1800s Victorian London, the lithe pugilist and debauched detective with the uncanny sense of deduction, Sherlock Holmes, and his acutely observant brother-in-arms, Dr Watson, manage to send to the gallows their occultist arch-enemy, Lord Blackwood. However, evil knows no boundaries--and as the disquieting rumours that the fiendish practitioner of the black arts has eluded death start to spread like wildfire--a mysterious copycat picks up where the deceased aristocrat left off. Now, against the backdrop of rampant superstition, Sherlock's feisty old flame with a hidden agenda, Irene Adler, has returned to further complicate matters, as the seemingly resurrected Blackwood continues his reign of terror. Has the dark lord, indeed, returned from the dead? Is he intent on slaughter and destruction?