Jack the Ripper
In 1888, five commercial sex workers were found brutally murdered. The killer had done it in a way that suggested he or she had some surgical knowledge. Their throats and abdominals had been cut and their internal organs taken out. During the investigation, the killer sent letters to the police and the media with the name Jack the Ripper. Who he really was and why he was killing prostitutes are mysteries that will probably go unanswered.