The case of Joseph Vacher was just as well known, more deadly and even compared to the murders committed by "Jack the Ripper", so much so that Vacher even shouted it was "Joseph the Ripper" . This murder, whose identity was unknown at the time, left a trail of terror wherever it went, and its capture became a career opportunity for the investigating magistrates. After Vacher's capture, a new type of criminal interrogation was used to try to incriminate him for the murders he was believed to have committed. The major breakthrough in criminology came in the form of methods that led to his capture and identification. Magistrates all over France were searching for "Jack the Ripper of the South East", the first important magistrate was informed of the "murder of the little shepherd". This crime is what proved to be Vacher's undoing, as it led to the formation of a pattern of the numerous murders he committed. The connection was first made by the investigating judge, Émile Fourquet, from the city of Belley. Vacher had committed a murder in the city about two years earlier, the connection being made by similarities with the way the two victims were killed. The help of other magistrates was needed to gather information linking the two murders, it was then that the magistrate of Dijon, Louis-Albert Fonfréde, forwarded seven other murders that shared many of the same elements. that a murderer may be responsible for the deaths of eight different people, that I know of, across France. The magistrate responsible for the Laurent case, Alphonse Benoist of Lyon, also noticed similarities and, making use of the resources of a journalist, managed to find a common element in many...... middle of paper..... .during the entire trial where the magistrate was trying to lure him to his own death, Vacher was trying to convince the case that he was insane and therefore had no control over his actions. During Vacher's travels through the French countryside he was implicated in the murder of at least eight different people. While the belief that he may have been behind the deaths of many others is still alive today, that truth may have died with him. While the processes used in investigations will continue to evolve in response to changes in how criminals commit their crimes, we must remember that to stop crime we should stop the reasons for its existence. Using reasoning and questioning to get the desired outcome in an equal and fairer way to get a criminal's confession gives me hope that from violence we can become a better society.