Sherlock Holmes and The Black Scale

Sherlock Holmes and Dr Watson are both men who are used to facing evil. But never before have they encountered evil in it's purest form. Until now... Now they have to face that villain, as well as Holmes' old nemesis. Now, they are forced to work with a man who is a convicted murderer and whom they have no reason whatsoever to trust. Well, that man, as well as a certain Night Fury.