Profiler 3: Crime Ends

"Yes."

Donald's wife explained: "He has an allergy to wool products. Or is it more severe allergic asthma? If he touches these things, he will cough and sneeze, shortness of breath, chest tightness, etc. In severe cases, it may even lead to shock."

"Yes,? This is it!"

Jiao Yang hurriedly said: "So none of your family members know how to use these things?"

Mrs. Donald nodded and said: "That's true. Including cashmere sweaters, wool quilts, mattress gloves, blankets, hats, scarves, etc.? There are also hairs from chickens, ducks, rabbits, cats and dogs, etc.? We don't have any at home. ? There is no way to keep pets.”

"awesome!"

Jiao Yang grabbed Blanco excitedly and said, "This proves that there is indeed a third person at the scene where Eric was killed!"

This guy is really persistent.Blanco looked at Jiao Yang with some admiration, but also a headache.Originally, as long as they found the murder weapon and made Donald plead guilty, the case could be closed.Well now, everything has to start all over again.

Although Jiao Yang has discovered something, it still needs practice to prove it.

Blanco took a lot of samples at Donald's house with the police.

After going back for inspection, it is true that there are no animal fur products in Donald's house.The police also retrieved his medical records over the years, which proved that he did suffer from severe allergic asthma. His allergic reaction to animal fur, especially wool products was very serious, and he could not usually wear woolen sweaters and other clothes.

And Eric, who has always advertised himself as a cool guy, will not still be wearing wool and cashmere sweaters this season.The forensic doctor confirmed that on the day Eric was killed, the jacket, T-shirt and jeans he was wearing were made of polyester and pure cotton.

And the wool fiber tissue found in the gap between the nails of Eric's left hand is indeed very similar to the arrangement of woolen sweaters.

Then, the police began to investigate in the school. On the day Eric was killed, among the people who had been in contact with the school, whether anyone was wearing a woolen sweater.

On the same day, Mr. Savannah, who was mutually verified by witnesses, was wearing a cotton and linen skirt. The two security guards who took Eric away were wearing navy blue security uniforms. They were not made of wool, but more like the fiber structure of a woolen sweater. The difference is huge.

As a result, the case seems to have entered another fork.The police's attention fell on the puzzle piece found at the scene.

This time, Blanc took the initiative to find Jiao Yang and Lu Yuanli, and asked them what they thought about this piece of the puzzle.

Jiao Yang said: "Just this area, I really can't tell what it is. Didn't you find it on the Internet?"

"No."

Blanco said: "I have searched all of them. Including our internal investigation. It is more consistent with your opinion. It feels like a plant, like a leaf. On the picture puzzle, Eric's blood reaction was detected. However, there was heavy rain on the day of the crime, and puzzles are something that students like to play more.

So the piece of the puzzle has actually been polluted.The existing technical conditions cannot be judged for the time being, whether it was thrown there in the first place, or it is related to the scene of the crime.Therefore, the focus of the investigation was not placed on this at the beginning.

Or, can we openly solicit puzzle clues from teachers and students in schools? "

"Better not to do that."

Lu Yuanli frowned and said, "Back then there was a case in our country where three poker cards fell next to the corpse, causing 6 people to participate in an online puzzle game at the same time. Although it was proved after the case was solved that the case had nothing to do with the three poker cards, But it still caused a sensation and triggered serious social repercussions. It is easy to attract fame-seekers and even imitators. Until this piece of the puzzle is proven to be a key clue, this is a dangerous approach.”

Blanco shrugged and said, "But this is the only clue at the scene that has not been investigated. If we don't openly solicit clues, we won't have much else to do."

"of course not."

Jiao Yang said solemnly: "Although in the 20s, criminal investigation has all kinds of high-tech means. Investigation, visits and investigations seem to be outdated from the methods of the last century, but it is still the most effective way to solve cases. Just as As you said, this is a large campus with tens of thousands of people, not a desert.

It is impossible for the murderer to fall from the sky, stab Eric to death, and then disappear out of thin air.We can now go around several dormitory buildings around the administrative office building, as well as the narrow path leading to the nearby buildings where the personnel were located that day.It is of course necessary to publicly solicit clues, but the direction of investigation is best to be the witnesses of the day. "

However, the work Jiao Yang mentioned requires a lot of manpower, material resources and time.

"Ok."

Blanco said: "Professor Lu, can you give us some enlightenment on the murderer?"

Jiao Yang listened, sweating for Lu Yuanli.Criminal profiling is to deduce the criminal's psychological state, status and other personal circumstances based on the behavior pattern shown by the criminal.

Naturally, the more details and uniqueness revealed by the murderer, the more corresponding labels can be found.

Going up and stabbing people to death is the most simple, fast and efficient method of killing.Among the homicide cases in various countries, they can be ranked in the top three, sitting on the second and watching the first.The three homicide customs that he summed up by stretching out his hand to choke the neck and hitting the back of the head with a brick are in no particular order.

As far as the current scene can't find any footprints, and the scene is so simple that even the motive for the murder can't be deduced, it's really difficult for someone to do a profile!

However, a professor is a professor, and a doctoral supervisor is a doctoral supervisor.In the past few days, Lu Yuanli has actually been thinking about this question.

Lu Yuanli paused and said, "The murderer found at the scene left too few traces. I can only infer from the dead Eric.

Eric has no strong academic qualifications and skills, no stable partner and career, an addict/gentleman, a high mental state, and hangs around the dark web.In the inherent impression, he should be regarded as a high-risk group, or a factor of social instability.Then, those people who drink and smoke/drug with him on a daily basis may know some of his side that is out of the public eye.To sum it up, Eric has a few key words, smoking/drugs, dark net, unstable. "

"I see, thank you professor."

Blanco got up and thanked, "We will continue to follow up and investigate after we go back."

When Jiao Yang sent Blanco back, Lu Yuanli had already packed his things and was ready to go home.

"I come!"

Jiao Yang snatched the file from Lu Yuanli's hand.

Knowing that this guy wanted to go home with him again, Lu Yuanli shrugged indifferently.

As soon as the two of them entered the gate of the villa, there was a moment of darkness in the corridor. Jiao Yang threw the file casually, and threw Lu Yuanli against the wall, "You have been indifferent to me for several days, what do you want? When will you be angry with me?!"

Lu Yuanli turned around and said, "You think my house is an inn, and you can come and leave whenever you want?"

"Let's keep a low profile and don't leave anyone with a clue. Isn't that what you said?"

Jiao Yang said: "Besides, I've already explained it to you. I didn't mean to cut it first and play it later. It's just because my current roommate is a little withdrawn and difficult to get along with. Others can't bear it and moved away, so I temporarily vacated the room! "

Lu Yuanli said as if nothing had happened: "That's not very good. You can finish your studies normally like other ordinary students, instead of harassing your professor every day."

"What is harassment?!"

Jiao Yang said angrily: "I just want to see you every day! If... Forget it!"

Jiao Yang picked up the files, put them in the grids on both sides of the corridor, and turned around to go out.

Lu Yuanli couldn't help shrugging as he watched him lead the door of the villa to death.In fact, the last sentence he just said was quite pleasant.If only he had been more patient...

In the early morning, before the sun hit the treetops, the birds sang songs, and the breeze blew the oak trees, bringing a burst of fragrance from the leaves.

At dawn, a few students dragged their luggage out of the school, ready to take the morning bus to the nearest Confucius Institute to participate in the "Taste of China" networking event.

When the three of them passed through an oak forest outside the school, the plastic bag in a girl's hand was scratched by her clothes, and the ingredients specially prepared for this theme event rolled out.

The girl ran over to pick it up, but suddenly tripped over something and almost fell down.The sky was dark, the girl looked down and couldn't help but screamed, "Oh my god, this is a human leg!"

The three students were so frightened that they ran back to the school to find the teacher and call the police. They even forgot to carry their luggage.

Blanco rushed to the scene and found the body of a man partially burned by oak branches.The corpse was completely unrecognizable, and the facial features were burnt to blackness. From the gray and thin hair, it could barely be seen as a middle-aged male.

This morning, as soon as Lu Yuanli woke up, he was called out by the head of the department.

Jiao Yang just ran around the playground twice in the morning, and when he heard the students talking about someone dead, he hurried over to have a look.

At this time, the crowd who heard the news had all been driven back, or blocked outside the cordon.The two just looked at each other across a mutilated corpse.

At this time, Edmondo just squeezed in in a protective suit.

"Oh my God!"

Edmondo saw the head and face of the corpse and shouted: "How can we identify it after it's burned?! The deceased was a white elderly man, about 60 years old. Before being burned, there was no sign of biological activity. It should be thrown after death. The murderer used combustion aids, otherwise it would be difficult to burn like this.

There were no obvious puncture wounds on the body of the deceased.Only on the hands and feet, there are faint traces of binding.There are sunken strangle marks on the wrist, probably something like hemp rope.It must have been tied up after death.The body was burnt like this, and the cause of death cannot be determined for the time being.It can only be ruled out that he was not strangled to death, or stabbed to death with a murder weapon.As for the time, according to the reaction of corpse spots and rigor..."

Edmondo looked at his watch, "Initial estimate, the time of death is... about eight hours, that is, around ten o'clock last night."

"I also feel that this is just the place where the body was dumped, not the scene of the first crime."

Jiao Yang took a closer look at the bare/bare feet of the deceased, and said: "The lower limbs of the deceased were abnormally red, with protruding blood vessels, and there were signs of struggle. It seemed that he died of suffocation. Combined with the absence of scars on the neck of the deceased, the cause of death is highly probable. Carbon monoxide poisoning."

Blanco nodded and said, "It's just like this. It may be a bit difficult to find out the identity of the deceased."

"I don't think it will be difficult."

Jiao Yang said: "Sheriff, look at the feet of the deceased. He was not wearing socks. If the cause of death was really carbon monoxide poisoning, he should be a nearby resident, or even someone from this school."

"Just because the deceased was not wearing socks, you know he is a resident of the neighborhood?"

Blanco said: "Maybe it's just because, during the process of dumping the body, the socks were deliberately ripped off?!"