Lin Lei knows very well that the current level of forensic science and technology can be said to be a world of difference from 30 years later.

The bloodstains can probably only be compared to the bleeding type, and the DNA is not to be thought about, and the fingerprint is the most critical evidence.

This case has the fingerprints of the murderer, which can be regarded as ironclad evidence.

In the second case, the fingerprints of the masked man were extracted from the pistol left at the scene, so as long as the suspect is compared, there is absolutely no such thing as framing him.

In the vast sea of people, there are tens of thousands of eligible men in Hulan County alone, and they can only be compared manually, and the efficiency is naturally very low.

If you count the counties and cities around Harbin City, such as Bayun County, where the second case occurred, etc., the number of comparisons is hundreds of thousands and millions, which is not realistic at all.

In 30 years, the so-called "needle in a haystack" can be carried out, because a large number of work "computers" can liberate the "human brain", but in the current environment, only key comparisons can be carried out, and "needle in a haystack" cannot be carried out.

……

At this time, Captain Zhang patted Lin Lei on the shoulder, and suddenly took out a small notebook from his pocket.

The small notebook was the most common notepad with the words "work notes" written in the eighties, and Captain Zhang said to Lin Lei: "I didn't expect you to be quite attentive to the case, not bad." I have a dinner in the evening, it's not convenient to take you there, you go back to the guest house by yourself. This notebook is a summary of the case that I made, and it can be regarded as my own notes! The case file can't be given to you, so you can just look at the notes. ”

Lin Lei was overjoyed, hurriedly took the notepad, and said to Captain Zhang: "Thank you Captain Zhang, I just want to see this!"

Captain Zhang nodded, looked at his watch, it was already half past five, and then said a few words to Lin Lei, and left alone.

Looking at the back of Captain Zhang's departure, Lin Lei took out a red plum cigarette and wanted to light it, but put the cigarette back again.

This cigarette is too difficult to smoke, Lin Lei saw a store on the side of the road, which was obviously a little better than the "Dongfanghong" store just now, so he walked in.

Sure enough, the cigarettes in it are of much higher grade, and those expensive cigarettes in later generations are naturally not available, and the most expensive one is called "Ashima".

This cigarette costs four yuan a box, and Lin Lei paid for a box.

After coming out of the commissary, Lin Lei lit an "Ashima" and began to look through his notebook to check the beginning and end of the third case.

The third case was even more shocking.

Because there was a gap of four months between the first case and the second case, but the third case actually happened half a month after the second case!

The frequency of murderers has significantly accelerated!

The third case took place on 27 October 1987.

The victims were the family of Director Mu, director of the office of the Hulan County Public Security Bureau!

It's another big case!

Director Mu has a family of four, one son and one daughter.

Because the eldest daughter is married, the family is Director Mu's wife and the youngest son, and the eldest daughter lives not far away, just in the courtyard next door.

Late at night on the day of the crime, a dark shadow climbed over the courtyard wall of Director Mu's house and quietly came to the bedroom door.

Armed with a knife and an axe, the man began to pry the door.

The method of prying the door is exactly the same as in the first case, which is to "cut" the crack of the door with an axe, make a gap, and then open the latch behind the door.

After successfully entering the bedroom, facing Director Mu's family of three who were sleeping, the murderer took out a bull's ear knife and began to commit crazy murder.

The specific process does not need to be repeated, Director Mu did not resist at all, and was stabbed to death by the murderer in his sleep.

Then Director Mu's wife and youngest son were awakened, and they fought with the murderer, but the fighting process was very short - after being killed first as the most combative male host, the orphan and widow were not the murderer's opponents at all.

After killing a family of three, the murderer actually wrote a line of large letters on the wall of the scene.

There is no detailed excerpt in Captain Zhang's notes, to the effect that the murderer claimed to kill a hundred policemen.

What's more critical is that the murderer actually left his name "Hulan Daxia" on the wall.

The title of the murderer "Hulan Daxia" comes from this.

Lin Lei took out an Ashima, lit it, and slowly spit out a smoke ring.

This is a provocation!

And it's a red fruit provocation!

The director of the office of the county public security bureau, although the level is not as good as that of the director and deputy director, but he is also a senior leader in the county bureau, was killed by this murderer who called himself "Hu Lan Daxia"!

The more staggering thing about this case is still to come!

The killer did not seem to be in a hurry to leave the scene after killing people and leaving handwriting on the walls.

Hu Lan turned on the kitchen tap and blocked the drain, allowing the tap water to flow into the room.

There were several big white geese in the yard of Director Mu's house, and the murderer drove the big white goose into the room where the crime occurred, and let the big white goose jump up and down at the scene......

After doing this, the murderer drifted away.

After the incident, the police entered the scene to investigate, and the scene they saw could be described as "a mess".

The scene was full of water, and the big white geese trampled on it, destroying almost all traces.

Director Mu's married daughter and son-in-law lived next door to the scene, but for some reason, they seemed to sleep very hard that night and didn't hear any movement.

Because the murderer arrogantly left the name of "Hulan Daxia" at the scene and threatened to kill 100 policemen, the case caused a sensation.

During that time, the entire Hulan County could be said to be panicked - although the gangsters claimed to only kill the police, but when the murderer killed the red eye, ordinary people naturally had no sense of security at all.

A large number of police forces have been transferred to Hulan County from Harbin City and other cities in the province, not only the police, but also the armed police and even some special forces.

The military and police carried out a large-scale investigation in Hulan County, and set up open and dark sentry posts, and all kinds of means were used, but Hulan Daxia did not appear.

After high-level research, the police set up a bureau for Hu Lan Daxia.

First of all, a large number of police forces withdrew from Hulan County on the surface, allowing Hulan Daxia to relax his vigilance.

Then the police announced in a high-profile manner that they would hold a grand memorial service for Director Mu, and the location of the memorial service was selected as a place with complex terrain that was conducive to the murderer's crime.

Of course, on the periphery of the entire area, it was covered with plainclothes police, just waiting for the killer to come in.

Didn't the murderer claim to kill a hundred policemen?

Far more than 100 police officers chose to attend the memorial service, and they deliberately did not bring guns, and the location was also conducive to the murderer's crime.

Will the murderer come or not?

The memorial service was held for several days, and the scene was repeatedly relaxed, so to speak, people could come and go at will - of course, the inside was loose and the outside was tight, and there were a large number of secret sentinels on the outside.

It's a pity -

The murderer didn't seem interested in "catching them all", so he didn't appear at the memorial service at all.

The police's design fell through......