Sherlock Holmes Shape of Justice

Heads ripped from their shoulders!Bodies torn and broken.London has become a world of darkness.A world with shape shifters.Vampires.Werewolves.Frankensteins.Innocent citizens are murdered by something that follows them in the shadows.Why are they slaughtered?What weapon was used?There is a thin line between good and evil. A twist this way, good is bountiful.A turn another way, evil is the outcome....