◎Chapter 43: The Dark Alley

Several other netizens were also interrogated by the police, one of whom was called "a lot", he showed a strong interest in the case, and even wanted to get words out of the police's mouth, he asked the police: "The murderer has a gun, right?" ”

Professor Liang and the head of the Drum Tower glanced at each other, and the head of the Drum Tower said, "Why do you ask that? ”

The netizen said that 12 years ago, when the police were interrogating the crowd, they asked many times if they had noticed who had gunpowder or shotguns. This detail is very important, perhaps it means that there should be traces of gunpowder on Diao Aiqing's body parts, or on the packaging bag, or on the bed sheets, or Diao Aiqing was shot with a shotgun, and it is very likely that the crowd heard the sound of a shotgun on the night of the crime - otherwise, the police would not have investigated gunpowder or shotguns!

The director of the Drum Tower said meaningfully: "Don't guess, it's best not to know some things, if you know it today, you may die tomorrow." ”

Professor Leung said: "At that time, the Chinese New Year was approaching, and the gunpowder was probably from firecrackers or fireworks, so don't guess anymore. ”

After the dismemberment of the corpse, the identification of the corpse is the focus of the investigation. In the 9/11 shredding case, the deceased's head was boiled beyond recognition and difficult to recognize. Six invited experts worked non-stop for a day and a half, using cranial restoration techniques to restore the appearance of the skull. This is a very amazing forensic science and technology, even the skulls unearthed from the tomb can be restored to their original appearance. The photograph shows the deceased as a middle-aged man with thick eyebrows and big eyes, a broad face, a hooked nose, and a pair of glasses.

All the police officers in Lanjing City took action, each taking a photo, to investigate the identity of the deceased throughout the city.

The Group of Experts made new progress and called for an immediate briefing on the merits. What kind of arguments will they make? A trace examination expert spoke on behalf of the expert group, and opened with an affirmative tone: "The murderer may be a woman!" ”

Before the words fell, there was a slight agitation in the room, and many people began to talk to each other.

As long as a crime is committed, it leaves a trace.

In the 9/11 shredding case, experts used a microscope to find the black plastic bag containing the body parts. It was a brand new unused plastic bag, unfortunately no fingerprints were extracted, the plastic bag had been thrown into the trash, and the experts spent a lot of work to first remove other traces of garbage on the plastic bag, and then found a small stain on the handle of the plastic bag.

The stain is suspected to have been left by the murderer.

The expert group divided the stain into 100 parts, and did a trace component test, and there were red spots as small as pinholes in the stain, which the experts initially thought were blood stains, and if it was the blood stains of the murderer, it was undoubtedly a major breakthrough in this case. The physical evidence examination was extremely rigorous, and the experts first used chemical experiments to detect whether the red spots were blood, and the results were very disappointing.

Red spots are not human blood!

However, the identification process was clear, and the expert team found oil and milk among the ingredients of the stain, and the red spots were lipstick!

The traces expert said: "The lipstick can be inferred that the killer may be a woman. ”

Su Mei asked: "Is the milk in the stain sure, is it possible that it is human milk?" This is important. ”

"We have made comparisons and found that cow's milk has three times the total protein content of human milk," the trace expert said. The protein of milk is mainly casein, and human milk is mainly albumin. ”

"What kind of oil is oil, gasoline, diesel, or cooking oil?" ”

The expert said: "It's the oil we usually use for stir-frying." ”

"We can imagine throwing the corpses, in the early hours of the morning, before dawn, the streets are pitch black, there is a woman wearing lipstick, riding an electric bicycle, no driving lights, plastic bags and bags containing corpse parts in the basket, driving past the garbage bin," Bao said

, she didn't stop, just devoured to slow down and slide, throwing a bag of shredded corpses into the trash. It is likely that she inadvertently wiped her lips, got it on her hands, and left it on the plastic bag when she picked up the body bag......"

Professor Leung said: "Is the oil soybean oil, sesame oil, rapeseed oil? ”

The expert said, "This ...... We need further testing. ”

Professor Liang criticized the trace identification expert group and asked them to find out the composition of the oil as soon as possible, and after the meeting, the trace identification expert did an urgent test, and the result showed that it was cottonseed oil. The oil is rarely used in home kitchens, and trace specialists used the Cooking Oil Rapid Tester, which is used by the Health Bureau to test the degree of aging of cooking oil, to put the metal probe of the instrument in contact with the oil, and after ten seconds, the reading displayed on the instrument was 42. This indicates that cottonseed oil has been used many times, resulting in signs of oil aging. Identification experts also extracted alkali and alum from the composition of the oil.

The expert hurriedly approached Professor Liang and told him the good news.

The appraisal expert said excitedly: "Lao Liang, I figured it out, this is an oil used to fry fritters!" ”

Professor Liang was pleasantly surprised and asked, "Are you sure?" ”

The expert said: "There is absolutely no mistake, this is the oil for frying fritters, repeated use, alkali and alum, hair fritters are essential." ”

Professor Leung told Tulong to set off immediately and bring the owner of the fried dough sticks near the dumping site back to the police station for interrogation. The stall owner is in his fifties, wearing an apron, and is an honest citizen, every day at 4 o'clock in the morning, he and his daughter-in-law go out to the stall to fry fritters, and there are many customers, all of whom are surrounding residents, and he has no special impression of the customers who bought fritters on the day of the crime, and he can't remember whether there is a woman who wears lipstick.

Professor Liang said, "You have a good memory. ”

Bao Shu reminded: "On September 11, before dawn, was there a suspicious person among the customers who ate breakfast to buy fritters, a woman, wearing lipstick, riding an electric bicycle, and a black plastic bag in the basket. ”

The stall owner who sold fritters thought for a while, shook his head, and suddenly said, "You ask this, it can't be related to the corpse shredding case, right?" ”

Professor Liang replied, "Don't be afraid, just understand the situation, and if you think of something, tell us." ”

After the stall owner left the police station, Professor Leung re-formulated the direction of the investigation, and the murderer was likely to have bought the fritters and should live near the fritter stall. The investigation and visit team centered on the fritter stall and did a basic investigation in a large area, even if nothing was found, at least it could narrow the investigation circle, focusing on the single households in the surrounding residential areas and people with criminal records.

For some reason, Bao Chu became suspicious of the stall owner who sold fritters, and the stall owner's eyes vaguely seemed to hide something, and there was a strange smell on his body. Bao took two investigators and went to the stall owner's house.

The stall owner who sells fried dough sticks lives in Xiaofen Alley.

This is a dilapidated alley, all of which are low and old old houses, with peeling walls, and there are many small restaurants in the alley that have been converted from private houses, and the sanitary environment is very bad. There are no street lights in this alley, and at night, the whole alley is very dark. The low houses were covered with asbestos tiles, the yards were covered with locust and elm trees, and the occasional black cat walked over the walls, and at night passers-by walking alone in such dark alleys would feel a chill.

It's hard to imagine such a dilapidated alley in a bustling city, and coincidentally this alley is near Lanking University!

What is certain is that more than ten years ago, the deceased Diao Aiqing once walked through this dark alley.

More than ten years ago, there were rented bookstores and video stores in this alley, Diao Aiqing liked to read, and after the incident, the police investigated the bookstore and found no suspicious clues. Bao Chu told the old director that from the disappearance of Diao Aiqing to the discovery of her body, it lasted nine days, and the murderer had time at all

Clean up the murder scene. The old director agreed with this statement and regretted that if the investigation had started from the day of the disappearance, Diao Aiqing's case would probably have been solved, and the school would have been held responsible for the disappearance of the student and the school knew nothing.

Bao Shu and two scouts stood in the alley, the wind was blowing faintly, when would the souls of the dead who had been wandering for more than ten years rest in peace?

The stall owner who sells fried dough sticks lives in a courtyard in Xiaofen Alley, with several tiled houses, a plane tree in the courtyard, and some broken glass stuck in the wall to prevent gangsters from climbing. The stall owner's son, who is in his thirties, runs a mutton ramen restaurant that is a house on the street from his home, and his daughter-in-law is very virtuous, and when she comes back from selling fritters in the morning, she has to help her husband with the work.

The yard is full of sewage, garbage, and no sewers in the alleys, so most residents choose to dig a yin well in their yard. Bao Chu noticed that there were blood stains near the drain, and the two scouts became vigilant, and the stall owner's son explained that he had killed sheep in the yard, and Bao Chu dipped his finger in the blood, sniffed it, and nodded silently.

Bao Shu took out two photos - Diao Aiqing and the photos of the deceased in the "9.11" corpse shredding case, and asked them to identify, the stall owner's son and daughter-in-law had no impression of the photos, and when the stall owner who sold fritters saw Diao Aiqing's photo, a trace of panic flashed in his eyes, and he said that the police had also shown this photo to him more than ten years ago.

Bao asked, "What did you do in 1996?" ”

The stall owner replied: "Selling fritters, I have been selling fritters for more than ten years." ”

One of the scouts joked, "You're an old fritter." ”

The stall owner didn't mind at all, and replied with a smile: "You're really right, my nickname is Lao Youtiao." ”

Bao Chu asked again if he had noticed any suspicious people when he went out to sell fritters in the early morning of September 11. The daughter-in-law thought for a while and blurted out, "Oh, oh, there's one, I have to tell you, it's weird."

The stall owner immediately interrupted his daughter-in-law's words and scolded her not to talk too much.

Bao Chu asked her to continue, and the stall owner glared fiercely at the mouthy daughter-in-law and turned to leave. The daughter-in-law stopped talking, and Bao Chu encouraged her many times, and finally she said something in a hurry. That morning, before dawn, my daughter-in-law and father-in-law were selling fritters, and a camel rode a donkey tricycle with a bulging black plastic bag on it. The daughter-in-law was talkative and asked, "What's in it?" ”

The camel replied, "Meat filling!" ”

After the camel left, the father-in-law scolded the daughter-in-law, and the daughter-in-law felt very aggrieved.

The father-in-law whispered to his daughter-in-law, "Do you know who that camel is?" ”

The daughter-in-law said angrily, "How do I know? ”

The father-in-law lowered his voice and said, "I know this person, the camel of the crematorium, he is the incinerator of the crematorium. ”

It's a strange thing, a camel who buys fritters in the morning, a tricycle carrying a bag of minced meat, he doesn't run a restaurant, he doesn't sell buns or pies, he is an incinerator in a crematorium. Out of timidity and caution, the stall owner who sold the fritters did not tell the police about the incident, and Bao Chu also expressed understanding.

One of the scouts asked, "Is this camel dark and short, bald, with triangular eyes and a big mole at the corner of his eye?" ”

The daughter-in-law said, "Yes." ”

The scout gasped and immediately asked, "Around fifty?" ”

The daughter-in-law replied, "Yes." ”

After coming out of the courtyard, the investigator looked around and told Bao Chu in a low voice that this camel had been dealt with by the police before, and his deeds had caused shock in the entire Lanjing police community, and the police had been concealing the case out of consideration for social stability.

Bao Shu asked: "What did this camel in the crematorium do?" ”

The scout said: "Cannibalism! ”