Xu Zhiyuan nodded, he had seen a lot of research on Jack by various experts in later generations, and directly analyzed: "So based on all the clues, this murderer must have considerable anatomical knowledge." Considering www.biquge.info environment at the time, there was basically no lighting, and I had to be vigilant about the surrounding situation at all times, and the extremely nervous time, Jack must have been a skilled knife user. ”

"Most of the victims were stabbed from left to right in the neck, suggesting that Jack was most likely left-handed, or skilled with both hands. This speculation indirectly indicates that Jack is likely to be an experienced doctor or anatomist, or at least a person with medical knowledge. ”

"Third, Jack must be a person with some physical strength. He should have a regular and legitimate occupation, because the crime time is mostly on weekends, and he needs a legitimate identity to hide himself from being suspected by the police investigation. It should be a single residence, going out alone at night, and the time of committing the crime is after midnight. ”

"Huh?" Conan Doyle looked at Xu Zhiyuan in surprise, and excitedly praised: "This time I really found the right person!" What you said was exactly what I thought! ”

Xu Zhiyuan smiled slightly, this is nothing, there are more analyses that are bolder, such as some criminologists put forward further theories that a female murderer dressed as Jack the Ripper. British scholars have used modern DNA technology to extract the DNA left on the letter believed to be written by Jack the Ripper, and compared it to prove that the letter was written by the same woman.

Proponents of this theory believe that the female murderer's job was a midwife, that she was able to wear blood-stained clothes without attracting attention and suspicion, and that she was more likely to gain the trust of her victims than men. One suspect who fits the description is Mary Pearce, who killed her lover's wife and children in October 1890, although there is no indication that she ever worked as a midwife.

Among the dozens of suspects, the most well-known are Lewis, author of Britain's best-selling children's book "Alice's Adventures", Prince Albert, the grandson of Queen Victoria, and Randolph, the father of British Prime Minister Winston Churchill.

In 2002, after more than a year of investigation and research, the American female writer Patricia wrote a novel called "Portrait of a Killer", and preliminarily concluded that the British impressionist painter Walter was the disembowel named Jack.

A few years ago, the British Channel 5 TV station broadcast a show called "Jack the Ripper: The First Serial Killer". In the film, Ms. Laura, a criminal investigation expert from the Scotland Yard Violent Crime Command, based on the characteristics of the murderer provided by 13 eyewitnesses recorded in historical documents, used modern criminal investigation technology to make a simulated portrait of "Jack the Ripper" for the first time, restoring the appearance of this "villain of the century".

According to Laura's analysis, "Jack should be between 25 and 35 years old, between 1.65 and 1.70 meters tall, and have a strong physique. Medium in appearance, not too noticeable, with short black or dark brown hair and even a mustache.

"Now the police have a lot of so-called suspects, but they lack conclusive evidence!"

Conan Doyle said helplessly: "So they found me, hoping that I could help solve the case, and after learning all the clues, I locked on a few key suspects." ”

"The wife of John, a British royal doctor, because all five victims had an improper relationship with John, a British royal doctor. The last of the victims, Mary Kelly, was in a long-term relationship with Williams. Lizzie was almost already in the cold by Williams because she was unable to have children. Therefore, in a state of extreme anger and insanity, she dug out the wombs of the three victims, and saw it as a cruel punishment for the victims. ”

"Dr. Thomas, a doctor who secretly specializes in abortion. In 1881 he was found to have poisoned several of his patients, both men and women. He was then imprisoned in the Illinois State Penitentiary, where he was released on July 31, 1891, on the grounds of good character. After starting a new life in London, he was again charged with murder and arrested. ”

"And ......"

Xu Zhiyuan saw that Conan Doyle was still about to speak, and quickly interrupted: "None of them are Jack, the real Jack is Koszminski, a hairdresser from Poland!" ”

In 2007, Edwards bought a bloodstained shawl at an auction, purportedly a Katherine murder scene item. Dr. Jerry, a well-known forensic doctor and expert in the study of genetic evidence at crime scenes, obtained a DNA sample using a "vacuum suction" method, and after comparing it with the DNA of Catherine's descendants, it was determined that the blood stains on the shawl belonged to her.

Experts also found epithelial cells in DNA traces on the shawl and found one of the female offspring of Kosminsky's sister. The comparison showed that the DNA was completely matched, and the Polish hairdresser Kosminski was identified as the real culprit.

In addition, Cosmins, who is believed to be the ripper, and his victims live in the slums of London's East End or have close ties to the neighborhoods. Knowing Kosminsky's situation, Edwards locked him on.

The seller told Edwards that the shawl was next to Catherine's body, and that his ancestor was one of the police officers investigating the case, and that he had obtained permission from his superiors to take the shawl home and give it to his wife. But the shawl was collected without washing and has been handed down through.

Edwards said he studied the shawl carefully and found that it had a daisy motif from the ancient festival of Michael's Day. The holiday has two dates: September 29, the day Catherine and the other victim were killed, and November 8, the day the third person was killed.

Edwards believes that the shawl is unlikely to be Catherine's item, as she was poor and had pawned her shoes the day before she was killed. The shawl was most likely deliberately left at the scene by Jack the Ripper, hinting at the date of his next crime.

In 2011, at the invitation of Edwards, John, an expert in genetic evidence, also began analyzing the smudges on the shawl. Using an infrared camera, he was also convinced that the smudge was a stain of arterial blood splattered during the chopping, consistent with the method used to kill Catherine.

UV photography then revealed that there were stains on the shawl. He also found the remains of kidney cells on his shawl, and the killer had taken out one of Catherine's kidneys.

Kosminsky was sexually assaulted as a child and sent to a psychiatric sanatorium in 1891, where he suffered a hard life and died in 1919 after suffering from auditory hallucinations, fear of being eaten, and refusal to groom.

"What? It turned out to be him! ”

Conan Doyle looked incredulous, pondered for a while, and said, "Although I don't know how you know this result, my intuition tells me that you are right!" ”

"You can go back and investigate this hairdresser, he will definitely leave a lot of evidence, and I believe that the case will be solved soon!"

Conan Doyle looked at Xu Zhiyuan's confident appearance and nodded, anyway, the police are also making every effort to investigate several key suspects, one more is not much, if you can really find new clues, it is a good thing.

"Okay, I'll tell the police right away, I don't know what reward you need?"

Xu Zhiyuan thought about it, the other party is just a novelist, what wealth can he have? Novel? That's right!

"Do you have any unpublished detective novels? Or a short story. ”

Speaking of his profession, Conan Doyle said proudly: "I am a professional novelist, naturally there are many works still in creation, I happen to have a novel at hand, the second part of the lost world, you also like detective novels?" ”