Jack the Ripper brutally killed only prostitutes who roamed the streets of London after dark, sadistically mutilating the women and even cutting off body parts to keep as souvenirs. His murders occurred within minutes before police arrived on the scene. People speculate, due to his precision and knowledge of anatomy, that he was an intellectual with a surgical background or a butcher. On the other hand, the Zodiac Killer would stop young couples in vehicles late at night and impersonate a police officer to get close enough to kill them with a firearm at close range. He approached the young lovers with a flashlight, asked them to roll down their windows and then fired multiple shots. Although, just like Jack the Ripper, his identity was never confirmed, a policeman spotted a man walking away from the scene and the Zodiac Killer later confirmed in a letter that the police had come close to catching the killer but