September 20, 2009, 5:10 p.m., intensive care unit corridor.

"Team Lang, you are cheating, Lu Hai is really recruited. But aren't you afraid that something will happen to him? After all, he had just gotten his life out of danger. ”

"yes, Team Lang. You taught me to respect life, and now you ......."

"Border pass, you better go and garrison the border pass! Pig brain, Lang team must have his point. However, from a forensic point of view, it is really not suitable for so irritating patients. ”

"That's... Didn't Team Lang's last sentence comfort him, saying that he was not the murderer who poisoned Wu Jianguo, so that he could ease his mind. That doesn't make sense. Team Lang really thought about it more thoughtfully......"

A few people only saw a few simple words of conversation with Lang Zhijiao, and they were surprised and sighed.

"No wonder, what good students can he teach under his hands......" Lang Zhijiao listened and said in a very small voice.

"I just deliberately provoked Lu Hai. Moreover, I don't mean to be appeased, he really isn't the real murderer. Lang Zhijiao turned his head, his left eye stretched out a little arc, his right eye was still squinted, and he said solemnly: "A casual person who has experienced the danger of life will have a sense of reason to deal with death. Life and death are not human consciousness, but human innate instinct, our fear of death is caused by ignorance of death, the emptiness of state transformation, in fact, we are also afraid of life, just like the fear of death, these are caused by our ignorance, so insecure. Our whole life is nothing more than the interaction of the death instinct and the life instinct. And Lu Hai has just experienced death, and even tasted death. So, at this time, he is the most sane time. When I lie to him at this time, he will not only not be stimulated, but will analyze the situation I have created for him more rationally. He understood what it meant to him to be in prison for the rest of his life, because a disabled person needed freedom more than ordinary people! That's why he confessed. This was his normal instinctive reaction. ”

During the explanation, Lang Zhijiao's voice was aggressive, and his speed was fast and slow, as if he had seen through people's hearts. And Liu Hanbiao, Qin Wan and others followed Lang Zhijiao's slow pace all the way, listened carefully, and chewed and digested every word of him.

"Lu Hai is indeed harmful to people's hearts and poisonous actions. Fingerprints at the scene prove that he went to the deceased's home. According to my inference, the deceased had no classes in the afternoon that day, so he went home and boiled a pot of red bean and barley porridge, so he went to work part-time as a tutor. And Lu Hai, who was quite familiar with the deceased's living habits, took advantage of the time when he left home to put the crushed acacia seeds into the pot. But the acacia taste is bitter, and Lu Hai should have found it when grinding. Therefore, after pouring the powder into the pot, he boiled it for some more time before the bitterness faded. It was already September, and the temperature would drop in the afternoon, and the water vapor would come out when the porridge was heated and cooked, so he opened the lid of the pot and turned on the range hood to facilitate the escape of bitterness. The water vapor is attached to the touch screen switch of the range hood, and it flows down naturally after cooling. The porridge in the kitchen and pot basically has no bitter taste. And when I got close to the hood, I smelled a faint smell of bitterness. After observing the new slip marks of condensate on the range hood, which are very different from those oil and gas stains, Lu Hai should have cooked the porridge for a long time. In this way, the vast majority of those acacia toxic proteins have also lost their activity, causing mild vomiting at most, which cannot be fatal at all. As for the later identification results, the porridge still has a considerable concentration of acacia toxin, and there is no bitter taste. This is obviously after Lu Hai, and someone put the extracted and purified acacia seed poison protein in it. Therefore, I finally concluded that Lu Hai was not the real murderer. ”

Speaking of this, Lang Zhijiao paused. When Li Xiaoyun put forward a refutation of temperature and toxic proteins, everyone had a question in their hearts. At this moment, everyone suddenly realized.

"Team Lang, how did Lu Hai and that mysterious person get into the deceased's house?"

"Yes, Team Lang, during the autopsy, it was found that the key was pinned to the waist of the deceased......"

Suddenly, two questions came from behind. When Lang Zhijiao heard this, he stopped, turned his head, lowered his head slightly, and even narrowed his left eye.

"Don't tell me it's an elaborate murder in a closed room! I don't know what the method of murder is in the closed room. ”

said angrily, Lang Zhijiao continued to walk forward slowly. The two who asked the question also lowered their heads in shame.

"You're just too rigid! and that Lang Zhijiao have a virtue ......" Speaking of this, Lang Zhijiao paused again, and suddenly said: "Ahem... I mean it's similar to what I used to do. But what I'm going to tell you now is. Solving a case is not only evidence, but also the clues that can be coherent. Evidence is important, but although some evidence is a gap in a clue, it may not be the most important link in solving the case. As I mentioned earlier, I don't know how they got into the deceased's room, let alone where the key came from. It can be imagined that entering the house of the deceased, unless you know how to unlock the lock, or you have a key. If you pick a lock, it's also a technology, and not everyone knows it. The two entered the deceased's house on the same day, and the chance that both of them would open the lock is a bit small, and this possibility cannot be ruled out. Lu Hai is quite familiar with the deceased, and there are many opportunities to contact the key, carrying the deceased on his back and secretly matching one is much easier than learning a technique. If it were you, you would have chosen the former. And none of that, in my opinion, is important. Because, I know who the real murderer is! The so-called links of these murders are only known to the real murderers. If you want to learn how to kill, I can discuss it with the real murderer and let him teach you. Oh, by the way, I don't know if there is a tuition fee. ”

Lang Zhijiao said and laughed a few times secretly.

"Team Lang, do you know who the real murderer is? Is there any evidence? Do you want to arrest someone now? Liu Hanbiao hurriedly asked.

"Lao Liu, why can't you understand me?"

Lang Zhijiao was a little impatient, then he turned around and whispered a few words close to the ear of the border pass, and then said:

"I said it, there is no evidence. Arrest? Forget it. The man will turn himself in. Let's go back to the detachment. ”

Border Guan trotted, got out of the hospital, and drove away first. Lang Zhijiao and others also followed, drove out of the hospital gate, and ran to the detachment.

20 September 2009, 5.40 p.m. in the conference room of the Criminal Investigation Detachment.

"Now, twenty minutes to six o'clock." Lang Zhijiao looked up at the time and continued: "There is still some time, let me say something that everyone wants to hear." ”

"The deceased, Wu Jianguo, died of acacia bean poison protein. And there are two waves of those who harm him. One is Wang Shufen and Lu Hai, in order to get the insurance money of more than one million, seeking money is the motive and deliberate. The specific modus operandi and links must be clear to everyone. I'm talking about the second wave of people, who probably did it unintentionally. Let's talk about the second wave of people first, first of all, this person knows that Acacia is poisonous, and knows the physical method of extracting its toxic protein. Moreover, the deceased's activities and rest time, this person was completely clear, and may even know Lu Hai's relevant movements. Therefore, this person must be an acquaintance of the deceased and Lu Hai's side, and know both of them at the same time. The deceased, in the social circle of Panyun City, was basically teaching, and the contact was nothing more than some students, teachers, and parents of students. Then, there are not many people who know each other together, and there are only one or two people who are more familiar. ”

"Team Lang, you mean Fang Ya?" Liu Hanbiao interrupted suddenly.

"I didn't say that. Listen, Lao Liu. Lang Zhijiao's eyes signaled, and he continued: "Of course, Fang Ya mentioned by Lao Liu is indeed one of the deceased who has a close relationship with Lu Hai. Moreover, the relationship is extraordinary. Do you remember all those love letters and emails I only saw? I flipped through it, and except for the one on the scene, all the emails I sent before were called: Dear Ya. The recipient's email domain name also starts with the initials of Fangya's name. If my guess is right, the deceased and Fang Ya should be a pair of lovers, and it can also be said that they are underground lovers. If you don't believe me, you can look up the domain name. As for Lu Hai, the relationship with Fang Ya is even more unusual. Simple colleagues? Just sitting in the same office? Neither! They are in debt relationships and even have emotional entanglements. Do you remember Fang Fang? Fang Ya's own sister, an insurance agent, is the perpetrator of the car hit Lu Hai. Her bank card with a rental car as collateral had a deposit of 150,000 yuan after investigation, which was remitted to her account a year ago. And the time happened to be the same day that Lu Hai withdrew 150,000 yuan from the ATM a year ago, a difference of less than two hours. Fang Fang drove into Lu Hai, obviously deliberately, and the surveillance showed that she had been waiting there for more than an hour. The reason should be that while Lu Hai tampered with the love letter into a suicide note, he also saw the title and the email domain name, and he recognized the email domain name, which was Fang Ya's. This coincides with my view that the deceased's lover is Fang Ya. Lu Hai discovered the improper relationship between the deceased and Fang Ya, and he should have wanted to coerce Fang Ya to do something. Money? Thinking that he can murder in order to defraud the insurance money, he may also ask Fang Ya for money. Meat compensation? It's not impossible, after all, he even did his friend's wife. And Fang Fang's deliberate murder is probably to vent her sister's anger. Also, I always have a feeling that this Fang Fang still has some connection with Lu Hai. Because, after checking Fang Fang's financial situation, she has earned a lot as an insurance agent over the years, and she has never been short of money. How could Fang Ya transfer the money given by Lu Hai to Fang Fang after just over an hour? 150,000 is not a small amount......"

When Lang Zhijiao said this, he hugged his left hand in front of his chest, touched his chin with his right hand, and thought about something.

"Team Lang, Team Lang, who is the murderer!?"

Lang Zhijiao talked for a long time, although the relationship between the people involved in the case gradually became clear, but several people present still did not know who the real culprit was. Qin Wan held back the gourd for a long time, she really couldn't figure it out, and she couldn't hold it back, so she interrupted Lang Zhijiao's contemplation.

"The deceased, who was a chemistry teacher, should be able to extract the physical method of acacia toxin. And the only one who can borrow the hands of the dead to make poison protein may be Fang Ya. But she had no motive. In fact, the real murderer is none other than one of the two sisters, and perhaps they are both involved. I remember that the deceased and Lu Hai were neighbors, the room type was the same, and even the door was the same. My inference is that Fang Fang wanted to kill Lu Hai but failed, and mistakenly poisoned Wu Jianguo. Then, Fang Fang killed Lu Hai for the second time. I think there is also a deep enmity between Lu Hai and Fang Fang......"

"Knock knock" There was a quick knock on the door.

Bian Guan gasped and pushed the door in.

"Lang...... Team Lang, the real murderer is here to vote... Surrendered! It's Fang Fang! Her sister... Fang Ya also came. ”

Hearing the words of the border pass, everyone stood up, full of surprise. Then, Lang Zhijiao led the team to the confession room.

"Name?" "Fang Fang."

"Origin?" "X City, Guangdong Province"

"Age?" "29 years old"

……

"Confess the facts of your crime and try to be as detailed as possible."

"The man surnamed Lu is a beast! ruined my innocence, and now threatens my sister. And I, I'm sorry for my sister, I poisoned my sister's favorite person............"

"Name?" "Fang Ya"

"Origin?" "X City, Guangdong Province"

"Age?" "33 years old"

……

"Please confess the facts of your crime in detail."

"I killed the founding of the country! I'm ashamed of how true I am to him. Damn it, it's supposed to be that brute surnamed Lu! …………”

Standing in the monitoring room, Lang Zhijiao and several members of the detachment quietly listened to the two people telling a common story in their own voices, that is, the causes and consequences of the case.

In the spring of two years ago, Wang Shufen, the wife of the deceased Wu Jianguo, came to Panyun City to visit the deceased who was teaching vocational education in the urban area, and followed her husband to the school's spring sports day. Because, Wu Jianguo performed a program at his opening ceremony, recitation. At that time, there was a soundtrack, and there was also a backup dance. The dancer was Fang Ya. The two performed on the same stage, which was very harmonious and pleasing to the eye. saw the relationship between the two for a while, and Wang Shufen was very displeased. Seeing this, Lu Hai took the initiative to attack and hooked up in every possible way, and the lonely Wang Shufen was finally surrendered by him.

At the end of the sports meeting, some colleagues who were in place and were usually close to each other went to dinner. Present were Wu Jianguo and his wife, Fang Ya and sisters, Lu Hai, as well as a school teacher and their families.

Fang Fang, who does insurance, came from the south to visit her sister Fang Ya. Because of this dinner, I also got to know Lu Hai.

That night, Lu Hai used his three-inch tongue to facilitate Wang Shufen's insurance in Fang Fang's place. One day a year ago, Lu Haise was still distracted, and asked Fang Fang to go to dinner on the grounds of consulting and buying insurance. Unexpectedly, Lu Hai drugged in the water, dragged Fang Fang to the hotel, and carried out **. Fang Ya knew about this and asked Lu Hai for 150,000 spiritual compensation, or he would be sent to prison. Therefore, Lu Hai sent the only 150,000 to Fang Ya. And Fang Ya didn't take a penny, and immediately transferred it to Fang Fang.

Over the past year, he has been living a chic life suddenly became struggling, and his mood became worse and worse. But he suddenly thought of Wang Shufen's insurance. So, he tried all kinds of rhetoric and conspired with Wang Shufen. Using Acacia to commit a crime was what Wang Shufen thought of. Because she always heard Wu Jianguo say that Acacia was highly poisonous, and he didn't even wear the Acacia bracelet he gave him, but put it in a bottle to watch.

In order to plot a case of food poisoning, Lu Hai would go to Wu Jianguo almost every day as a guest. In order to be familiar with all the movements and routines of Wu Jianguo, he also secretly assigned a key to his house during the period. As a result, inadvertently, Lu Hai discovered the love letter email sent by Wu Jianguo to Fang Ya, found several pieces of women's underwear, and even bumped into the disheveled Fang Ya in the room. It turned out that Fang Ya already had the key there at that time, and often went over to spend the night. In retaliation, Lu Hai demanded 500,000 yuan from Fang Ya and Wu Jianguo, or he would make the relationship public. At that time, Fang Ya and Wu Jianguo were just dragging their feet, after all, the two of them didn't have so much money, and as teachers, they were most afraid of this kind of ugly thing being exposed.

Later, Lu Hai became lustful again, and he didn't get the money, and he threatened Fang Ya to come to his house to have sex with him many times, and later gave her a key. Until one time, Lu Hai repeated his old tricks in the school dormitory, forcing Fang Ya to comply, and was discovered by Fang Fang. Only Fang Ya was responsible for these things, and Wu Jianguo didn't know anything about them. Until her sister Fang Fang appeared, Lu Hai wanted to intensify his efforts and wanted Fang Fang to submit again. As a result, the two sisters were forced to panic and agreed to plot to kill Lu Hai in order to prevent future troubles.

At that time, Fang Ya thought of using acacia seeds. Acacia was Wu Jianguo's first gift to Fang Ya, but he didn't let her wear it, and told her that Acacia seeds were highly poisonous, and he also said that he had an interesting story about extracting Acacia seed protein as rat poison. So, in the name of rat poison, Fang Ya borrowed Wu Jianguo's hand to prepare some highly pure acacia toxin. Just yesterday, Lu Hai made an appointment for Fang Ya's meat compensation service in the school dormitory. Wu Jianguo commuted to work as always, cooked red beans and barley in the afternoon, and went to a student's home in the community to make up for the class. Lu Hai sneaked in and sprinkled a small half bowl of ground acacia seeds in the pot. He smelled a bitter smell, afraid that Wu Jianguo would be suspicious, and probably the lid of the pot, heated it for half an hour, turned off the range hood, and then locked the door and went to Fang Ya's dormitory.

Fang Ya had already asked Fang Fang to wait for the opportunity at the door of the community that day, and before and after Lu Hai went out, Fang Fang walked upstairs alone. Who knows, Lu Hai's house and Wu Jianguo are the same type of house, even the door is the same, and the key is also the same model. Fang Ya told Fang Fang the house number of Lu Hai's house, but she mistakenly gave it the key to Wu Jianguo. Fang Fang stretched out the key and couldn't open it for a long time. She felt that she had misremembered the room number, but the floor was not wrong. So, she tried door by door, and it took about twenty minutes to finally open a door. That gate is none other than Wu Jianguo. Fang Ya knew that Lu Hai would drink milk every night to take care of his little face. Therefore, she asked Fang Fang to put the acacia poison protein into the milk. However, the only bottle of milk Fang Fang found was empty.

Anxious, she saw the smell of the porridge she had cooked. At that time, the porridge had cooled down, and there was still a little residual warmth. Simply, Fang Fang poured all the acacia poison protein powder into the porridge, stirred it, and locked the door and left. Wu Jianguo returned home and wrote a love letter to Fang Ya as usual, but there were a few words that felt good to use, and he wanted to drink some porridge before sending it. He drank the porridge with a high concentration of toxic protein, and his twitching muscles could not even dial 120, and he collapsed to the ground after struggling for a moment. Afterwards, Wu Jianguo returned to the community from Fang Ya, went directly to Wu Jianguo, confirmed that Wu Jianguo was dead, and changed the love letter. Wipe down the keyboard and he left. The next day, early in the morning, as usual, he pretended to call Wu Jianguo to go to work together, and then reported the case.

That's how the whole thing went. Even Fang Fang, who couldn't get angry, tried to kill Lu Hai by defying the law.

20 September 2009, 6.36 p.m., interrogation/confession monitoring room.

"Team Lang, it's really you! It's not much different from what you deduced. ”

"By the way, what did you let Xiao Bian do, Team Lang, why are the two sisters willing to turn themselves in?"

Lang Zhijiao squinted his eyes, his body was a little hunched down again, and he said something meaningful:

Fang Fang murdered Lu Hai for the second time, which shows how much she hates. However, it is this hatred that represents her most delicate feelings and the people she cares about the most. Red beans are born in the south, and a few branches are sent in spring. May you pick more, this thing is the most lovely. A few red beans used to be the only bond in the relationship between these people, and the lovesickness was the most painful, but it became this unbelievable assassination. Sad......"

After speaking, Lang Zhijiao went back to his office and took out a voice recorder.

"This time, I didn't have time to write an email. I'm tired......"

As soon as Lang Zhijiao's voice fell, his eyes slowly closed, and the whole person collapsed on the back of the seat.

Later, it was revealed through the border that Lang Zhijiao asked him to do two things. First, go to school and tell Fang Ya that her sister has been murdered twice and is close to madness. Second, he went to the technical department of the detachment and sent a message to Fang Fang: If you turn yourself in, Fang Ya will be fine.

Lovesickness is deadly, feelings are delicate and rational. Often, impulsive punishment is also a rational reward. Lang Zhijiao, who already knew the general reason for the incident, relied on the mutual trust and love between the two sisters to urge them to protect each other, so that the two turned themselves in.