Although we are all self-proclaimed fans of mysteries, do we really keep a track of the “real” mysteries that pop up around us? Well, most of us don’t.
Herein we have detailed for your information 7 famous people that the world should have known off, but their identities still remain unknown.
These 10 cases of unidentified serial killers are explored with an intention of understanding few of the most twisted minds the world has ever seen. In all these cases the murderer's identity remains unknown till this date, although various possible identifications of varying credibility have been proposed.