Mistakes are made in virtiually every murder investigation and the Ripper case was no exception. At the Eddows crime scene Commissioner Charles Warren ordered the infamous chalk writing off the wall of a nearby building.
Against orders and common sense Whitechapel Workhouse inmate Robert Mann removed Mary Ann Nichol's clothes as she lay in the mortuary awaiting autopsy. After that he and a chum scrubbed the body to remove blood and any other evidence that was present.
But probably the biggest mistake was to assume the killer must look a particular way. They were looking for an insane, drooling maniac spouting gibberish. Jack The Ripper most likely looked average and/or nondescript. Had he looked like the former description he would have aroused suspicion and may have been caught.
He didn't. Jack the Ripper was never caught.
Jack the ripper was the first serial killer to reach the media. The world has eyes on him. It was a scandal about the condition the police was at that time. There were no false starts in this case. There was nothing to go on but the remains of the victims. Even today it takes quite some time to catch a murderer on the run, but in the case of Jack the Ripper, there were many aspects police today would not come across.
Scotland Yard never claimed to have captured Jack The Ripper and in fact were ridculed for their inablity to catch him. It resulted in many conspiracy theories, some involving the royal family, the police force and even Inspector Fredrick Abberline.
They were trying to catch a cat burgler.
It is a common misconception that Scotland Yard was deficient in their investigation into the Ripper crimes. It simply is not true. Of course no murder investiation is perfect. They are run by humans, which we all know, make mistakes, even today with the most modern police technologies and knowledge. The 'Yard' launched a massive investigation including but not limited to:tracking dogs, door to door searches, undercover detectives, civilian assistance, a psychic or two, handwriting analysis (very rudimetary) and the support of the Queen herself, all a failure. It was not for lack of trying that police were unable to capture the most infamous killer in England's history. Jack The Ripper was never apprehended because Scotland Yard just did not have the technology available to catch this kind of killer. Although serial murder is nothing new, even in the Victorian era, the science needed to catch him was at least 100 years in the future. It's that simple.
Going under cover to catch a criminal such as a police officer posing as a prostitute inorder to catch people trying to pick them up.
The biggest handicap for police was their lack of forensic knowledge and tools. Jack The Ripper was both smart and lucky. Which is why he was never caught. In 1888 there was no such thing as blood typing, DNA, forensic ballistics, criminal profiling and although fingerprinting had been around for quite some time, it was rarely used before the turn of the 20th century. As with all homicide investigations nothing is ever perfect. Life just isn't like that. That does not mean that Scotland Yard messed up the case. They worked very hard trying to catch the Ripper but they were out-matched with this particular killer. If they did make mistakes the most obvious one was their preconceived idea of what this killer would be like. Much of their energy went into looking at suspects that were insane, drunks, ect. The idea of a serial killer looking like a 'regular' person was out of the question. We know today that in fact these types of kiillers look very average and blend in quite well, hiding in plain sight. We can speculate if the Ripper could have been caught with our modern crime solving advantages. Maybe, or maybe not. There is no way to tell.
Jack The Ripper was not caught because police did not possess the tools needed to catch this kind of killer. No way to analyze blood and fibers. No crime scene preservation. No criminal profiling. No computers, ect. These are how modern serial killers are caught.because they had insufficient devices as we do now, after all it was nearly 100 years ago!!!
The real identity of Jack the Ripper is not known. In a time before forensic science and even finger printing, the only way to prove someone committed a murder was to catch either him or her in the act, or get the suspect to confess. There was no scientists working with police to gather crime scenes evidence to help capture the victimarius.
The police tried to catch Jack the Ripper using numerous methods. At the time of the urders, the police force was not very sophisticated. For that reason, many current methods of identification were not yet available. For instance, there was no way of telling where a patch of blood came from, as forensic science was not yet that advanced therefore people could be wandering around, covered in blood from a human or animal and no-one would be able to prove what the source was.
computer police, basically police that are out on the internet trying to catch people doing illegal things such as sexual harassment, selling drugs, and possible child malesters, etc..
Jack the Ripper" is the popular name given to a serial killer who killed a number of prostitutes in the East End of London in 1888. The name originates from a letter written by someone who claimed to be the killer published at the time of the murders. The killings took place within a mile area and involved the districts of Whitechapel, Spitalfields, Aldgate, and the City of London proper. He was also called the Whitechapel Murderer and "Leather Apron." He was never identified or caught.