Jack the Ripper was a notorious serial killer who terrorized London, England in the late nineteenth century. He became a huge issue because of his gruesome murders, where he cut open his victims’ stomachs and removed all their organs. 0

But there was a bigger reason for his notoriety: Jack the Ripper had provoked newspapers and watch groups by sending them letters. These were deranged letters in which he confessed his crimes or even enclosed a kidney he removed from a victim. It was the first ever theatrical crime.0

Even though Queen Victoria of England, who was outraged at the crimes, personally ordered the police to catch Jack the Ripper, he was never found. The British police even asked Conan Doyle, the greatest mystery writer of his time, to solve the case, but they still couldn’t catch him. There were a few suspects, but there wasn’t enough evidence. 0

But that was in the nineteenth century. Modern science could now uncover the secrets of even the most perfectly concealed crimes. DNA always left behind evidence. 0

In 2014, scientists identified DNA from some semen found on a shawl that...0