Jack the Ripper was a very scary person who lived a long time ago in a place called London. He was called Jack the Ripper because he did very bad things to people mostly women. He was very bad and hurt people very badly. The police tried very hard to find out who he was but they never could. Many people were very scared of him because they didn't know when or where he would do bad things to people. Even the smartest detectives in the country couldn't find him and many people didn't sleep well at night because of him. The mystery of Jack the Ripper still unsolved today and many people still talk about him.