Tang Jingjing is very sophisticated, bought a bag of soft China for each of the teachers, and said that if she remembered something, she must call the police.

The janitor eats and lives at the post on weekdays, and I pray in my heart that the new janitor will not lose all his things.

God willing, we arrived one step early!

After learning the news of the death of the janitor, the new uncle has become a regular worker, and he is now packing up the relics in the sentry box.

We immediately went up and asked, "Uncle, did you find a single photo when you were packing up your belongings?" ”

This uncle spoke very casually, and it probably had something to do with today's good mood: "Photos, there are indeed a few postcards." ”

I hurriedly worked with Tang Jingjing and found those postcards. But what disappointed me is that those postcards are all Andy Lau and Zhang Huimei, which were more popular in the early years, and now they are long gone.

"Look at the back." Tang Jingjing said: "There are words written on the back. ”

I hurriedly turned around and found that there were some words written on the address bar on these postcards.

"Yang Xin sent Tang Wenqian!"

The address is: University of Finance and Economics, No. 26 Financial Street.

The University of Finance and Economics, isn't it the university where the murder occurred, and he wants to send it to a female student in the School of Finance and Economics?

Li Xingchen immediately couldn't hold it anymore, and scolded: "The old thing is really perverted, the old scalper eats tender grass, and he is eyeing the students." I understood, it must be the janitor who wanted to eat the tender grass, but the tender grass was not allowed to eat, so he had to kill people. ”

Tang Jingjing immediately twisted Li Xingchen's ears: "If you don't speak, you'll die." ”

Li Xingchen shouted again and again: "Didn't you say that you want to listen to the opinions of ordinary people?" Spread out, sister, you are a lady. ”

"These postcards were not sent, which shows that the janitor is still very self-aware." I said, "It would be nice if Lin Lao was here, he has served in the CIA, and he can help us analyze the thoughts of the janitor." ”

"Do you still need to analyze? This is clearly psychopathic. Li Xingchen interjected.

I smiled and said, "Everyone has a love for beauty, who doesn't love a young and beautiful woman?" Maybe the old man is just in love. ”

"Let's go, let's investigate this Tang Wenqian first, what is the origin!"

It is estimated that the only person who can fully contact the teachers and students of the school is the director of the logistics department, so we directly found Xu Cheng.

This time, Xu Cheng quit and put forward two requirements: "It's okay if you want me to tell you Tang Wenqian's identity, but how many clues I have provided you, and they are all major clues." If you don't give me a reward, you have to at least give me a certificate of merit, right? ”

I had no choice but to nod my head and say that I will send a notice to your school when I go back to commend you.

Xu Cheng told us the origin of Tang Wenqian: "This Tang Wenqian, I am particularly impressed, because she is the heroine of the Xiaolin incident ten years ago, the dead female student." By the way, what are you looking for her for? Is it really a ghost? Could it be that Tang Wenqian is dead and has come to take revenge on society again? ”

As soon as Xu Cheng said this, the faces of several of us turned pale.

How can a person who has been dead for ten years come back to kill people?

I gasped and got goosebumps on my back, is there really a ghost in the world?

At this time, I remembered that the notebook I read when I was a child recorded a unique science called 'Divination'. There is also a note below: Those who are more vicious will be entangled. With the pen as a hexagram, the hidden murderer will come out.

It means that if there are multiple suspects in a case at the same time, there must be a relationship between these suspects, and if their relationship network is drawn, the real culprit will naturally come to light.

With this in mind, I immediately crouched down and rearranged the clues.

The janitor.

The first migrant worker to die.

The second migrant worker Lin Yunshan.

Mysterious woman.

Among the relationships known now, Lin Yunshan had an improper relationship with the mysterious woman, and another dead migrant worker was very familiar with Lin Yunshan and may also have a relationship with the mysterious woman.

As for the janitor, the Tang Wenqian she has a crush on may be a mysterious woman.

From this point of view, the most suspicious is the mysterious woman!

There are also some objective factors to take into account, that is, who has the ability to kill the two female college students and the migrant worker.

I think the janitor should be ruled out, he is old, it can't be him.

And the possibility of a mysterious woman committing a crime alone is also very small, because she is a woman after all, no matter how strong she is, can she be stronger than a man? And the mysterious woman is the most suspicious, so the murderer may be two people, that is, her and Lin Yunshan.

It's just that what is the motive of the two of them? Why was it involved in the migrant workers who built the temple back then?

The janitor committed suicide, who did he want to protect?

As for the migrant worker who died, why would he eat his uterus and eat himself to death?

I think I have to discuss it with Lin Lao. After all, he specializes in criminal psychology, and he may be able to find out the murderer's motive based on the clues I have now.

I continued to investigate for a whole day, but I didn't get much out of it. After meeting in the police station at night, they were also exhausted when they saw Lin Lao, and they must have gained nothing.

Tang Jingjing said that in order to welcome new comrades to join, I will treat you today!

It's rare for a girl to be generous for a while, and I agreed. On the contrary, Li Xingchen insisted on not going, and was finally pulled by Tang Jingjing.

Later, I learned the reason why Li Xingchen insisted on not going.

Each of us asked for a dish, and in the end, Tang Jingjing ordered a lot of her favorite dishes. I saw that the prices were quite expensive, and I thought that this girl was quite lavish in spending!

Li Hong was born in the military and said little, but he also raised his glass when we raised our glasses. However, he is more cautious about his surroundings, and when there is a slight movement, his hand will subconsciously touch the gun on his waist.

The mouse and Li Xingchen were like-minded, he asked him for hacking techniques, he asked him for lockpicking techniques, and they chatted happily.

Lin Lao and I are more temperamental, and in the original words of the mouse, they can urinate in a pot.

As for Tang Jingjing...... This girl is good at dealing with delicious food, eating and drinking, as if she doesn't have the appearance of a criminal police captain!

Lin Lao used to work in the CIA in the United States, and I heard Wang Ju specifically mention it to me, so I humbly asked him about the psychology of criminals.

Lin Lao also likes to chat with me, he seems to know my background very well, and he will talk to my mysterious and treacherous old mansion at every turn. He even said that my great-grandfather once handled a case in the United States, and his ability to make the dead man speak single-handedly convinced the American forensic doctor.

I didn't expect my great-grandfather to have such an experience, I was a little surprised!

But I don't want to talk too much about my family, my father has told me countless times that I can hide it and try not to mention his name to others. I don't know what the reason is, so I just talked with Lin Lao, and I pulled the topic to this case.

Lin Lao told me that the psychology of this criminal, if you think about it simply, it will be simple. If you want to think about it more complicated, then it will be messy if you can't cut it and clean it up. He once published an article in a foreign magazine, which simply divided the psychology of criminals into three types.

Nothing more than fame, money, beauty.

The first is reputation, and in order to save one's reputation, one has to attack those who threaten him.

Then there is money, most of which are greedy, and murder and robbery.

Finally, there is beauty, which is also a temporary desire.

Considering all the factors in this case, Lin Lao pointed out sharply that nine times out of ten, the criminals are for money.

I suddenly realized that my heart is really listening to your words, which is better than reading a book for ten years!

I seemed to see a glimmer of light in front of me, and said to Lin Lao: "Then as long as we investigate the conflict of interests between several of them, we can basically understand the motive of the murderer, right?" ”

Lin Lao smiled and nodded: "Yes, in a word." But this case is too complicated, and I think it should be more than just about money......"

The two of us talked for a long time, and we really felt like we were seeing each other late.