Erasing Sherlock

A 21st century doctoral candidate takes on the guise of a maid-of-all-work in 19th century London in order to document the methods of Sherlock Holmes before he gained notoriety. It's a remarkable opportunity for research in the field, bestowed upon her by a benefactor who has sold his soul for a technology that only works if the devil he sold it to is sufficiently entertained.

The life of Sherlock Holmes is being written by another hand, and maid must become the master if she wants to survive. Because the devil loves a spectacle. The more blood, the better.