Chapter 515

Many people think that serial killers are pure lunatics or some kind of inhuman villain.

But this statement is not accurate. Serial killers don't print the words of serial killers on their faces. Future studies show that there are many idealists in this group who are highly educated, have a strong sense of morality, and even are willing to appear for the truth they are seeking.

They are good-looking, well-dressed and elegant. Some of them have stable work and interpersonal relationships. As for why they eventually become serial killers, there are various reasons.

The FBI's definition of serial killer is that at least three people have been murdered, and there is a "cooling off period" during the crime, which is different from mass killers who carry out massacres in the same place in a short time or crazy killers who try to kill everywhere.

Jack the ripper is a textbook serial killer.

According to Lestrade's description, this happened in three cases within half a month. The interval between the first case and the second case was ten days, while the interval between the second case and the third case was shortened to five days.

We can see that the speed of his killing is obviously increasing.

Whether they become serial killers out of mission, entertainment, ideals and beliefs, or simply regard it as a career, there is no doubt that they can get a certain degree of satisfaction from killing.

It's like being addicted to games or swords, but serial killers are addicted to killing people.

After every big sword, most people have the so-called sage time, and the "cooling off period" is like the sage time of serial killers.

Serial killers will let their excitement reach a peak through a murder experience, and then their emotions will gradually fall back, aftertaste the previous experience, sum up experience, and keep learning until the next crime.

This is also the trouble, because you are facing an opponent who will continue to evolve, and through the shortening of the cooling off period, you can see that the emotional stimulation brought by murder is gradually diminishing, which is why he needs to commit crimes more frequently to get satisfaction.

If Zhang Heng remembers correctly, two more murders occurred in the Eastern District on the third day after the first letter. However, one of them was committed in a different way. Later researchers generally believe that the case was not the work of Jack the Ripper himself, but it is not clear whether it was the masterpiece of the imitator, or whether someone fished in troubled waters and took advantage of the murder to blame Jack the Ripper It's on.

In short, Zhang Heng doesn't have much time left. If possible, Zhang Heng doesn't want any more victims to show up, so the best result is to find the murderer within three days. Of course, considering that the murderer's time is much faster than that in history, he may not have three days left. In addition, he needs to race with Holmes.

Zhang Heng didn't delay his time. After checking the corpse in the morgue, he rushed to the scene of the crime immediately. However, it has been cleaned up for such a long time, and the suspected evidence has been collected by the police. There are still some residual bloodstains on the ground. However, there are not many clues that can be collected, but we can see the murderer after running through three places The location chosen is also becoming more and more daring.

From the original dark alley, to the stockyard area, and then to the fence behind the apartment, the possibility of being found is increasing layer by layer.

Zhang Heng marked out the three crime sites on the map, and then according to the address provided by the short police officer, he visited the first person who found the body and the last person who saw the victim. These people had obviously been harassed by reporters, police and other idle men who inquired about the news for a long time. Zhang Heng just said that he was very impatient.

However, seeing the latter take out the gold coin from his pocket, those people have become hospitable again, and they are not tired of repeating what they have said many times these days.

Zhang Heng has already seen this information from the report provided by the police, so this is not the focus of his attention.

Thanks to later generations of Ripper enthusiasts, Zhang Heng already has a list of suspects. The specific name and age may not be useful, but the corresponding occupation and motive are of great reference value.

For example, a retired police sergeant later believed that Jack the Ripper was a sailor on a German merchant ship, because the White Chapel area was very close to the wharf, and the time when the merchant ship came to and left London coincided with the time when the victim was killed, so he speculated that the murderer was probably a sailor, and then disappeared mysteriously and did not commit the crime again because he went to the United States on that ship China.

Zhang Heng can ask the seamen if there are sailors near the person who last saw the victim that night.

Besides, there are also theories like royal conspiracy theory, barber theory, midwife theory This is a collection of people's wisdom. Each theory has its own entry point, but the effect is not very ideal after a circle. The witnesses have everything to say, and there is not enough unified caliber.

Zhang Heng realized that he might have gone astray. Of course, since he has such advantages, he has to give it a try.

All the way busy to now did not attend to lunch, and in a twinkling of an eye the sun is almost down, Zhang Heng also did not continue, this day he ran a lot of places, get information is also multifarious, it's time to stop to sort out ideas.When Zhang Heng returned to 221B Baker Street, he saw that Holmes had finished his dinner and was dealing with a plate of dessert.

He is as before a pair of not slow appearance, see Zhang Heng come back, look up a way, "your harvest today how?"

"I haven't got a clue yet. How about you?"

"I've found a very useful clue, and I'm digging down this clue. There should be results tomorrow." Holmes said with a smile, "do you want me to share some tips with you, my dear Oriental friend?"

Zhang Heng shook his head, "people who run early don't necessarily reach the end first."

"That's true, but people who run early always have an advantage. I'm already choosing which opera to watch." Holmes said, looking at Zhang Heng sitting opposite him.

Mrs. Hudson brought out the rest of the dinner in the kitchen, including bacon, peas and bread, and a few pieces of fruit, while the dessert was pudding. Zhang Heng quickly finished, wiped his mouth and went back to the bedroom. He took out the revolver he had bought three months ago, along with a kerosene lamp and a knife.

Holmes raised his eyebrows, a little surprised, "do you want to go back?"

Zhang Heng said, "that guy may commit a crime in the near future, and even if I don't meet him, I can make a field investigation of the environment and situation of several previous crime sites at night," he added after a pause. "By the way, I can also learn about the jinu group."

"Yes," Holmes praised, "you've become more and more integrated into the city."

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