Some viewers may find the following video disturbing! Viewer Discretion is advised! This is the story of the world's most feared ...

#: most feared  #feared man  #man in prison  #man caught on camera  #caught on camera  #for the first time  #strange  #shocking  #mysterious  #unreal  #unbelievable  #shocked the whole world  #shocked everyone  #no one was supposed to see  #documentary