Rippers

Jack the Ripper terrorized London in the late nineteenth century, killing a series of women and taunting police to try and catch him. The extraordinary nature of the murders, not least of which was the speed and cunning with which the murderer did them, added to the mystery. 
Since then, sudden bouts of copycat murders have taken place around the world in different cities. A few occurring at the same time? All the murders bear striking resemblance to the original Jack the Ripper cases, and all murderers sighted exhibited supernatural strength and speed.
Is Jack the Ripper immortal? Or are there several vicious killers equipped with high intelligence and increased physical abilities?
References:
-Jack the Ripper
-http://jack-the-ripper.org/
-http://www.casebook.org/
Category:Infernal
Category:Death
Category:Black Museum