three murderers

"Do you still remember that lunch?" Kong Yang crossed his hands, leaned on the chair, and asked with a smile.

Obviously, he was very interested in the question of how the deceased was poisoned, and at the same time he was very satisfied that someone asked this question, and the answer to this question he had already thought carefully in his mind.

"Speaking of that meal, could it be that someone used Bai Lu to poison him, and then he discovered the death characteristics of the deceased and wanted to get rid of his girlfriend's suspicion, so he made the illusion that the deceased was strangled to death? He was in a panic You don’t pay attention to your shoe prints at all, so you act as if nothing happened.”

"But the meal was eaten at noon, and the time of death of the deceased was at night, and the shoe prints were left on the weekend. How can this be explained?"

"In fact, once this toxin is poisoned, the incubation period varies slightly depending on the individual's constitution, ranging from 10 minutes to three hours. In the early stage of poisoning, fingers, tongue and lips will feel tingling, and then nausea, vomiting, abdominal pain and diarrhea will occur. Then there will be weakness of limbs, chills, numbness of lips and extremities, and then develop into general paralysis and paralysis. Severe cases will cause dyspnea, blood pressure drop, coma, and finally die of respiratory failure, while for poisoning The most painful thing for those who die is that it is a long process, often taking four to six hours to die!"

"Then that makes sense!" Someone immediately echoed.

"But during this period, that is, the early stage of poisoning, the deceased should still have the consciousness and ability to call for help, and he will definitely desperately ask for help from the outside world!" Someone questioned.

"It seems that the matter is not so simple! If it is poisoned by puffer fish, it must be a high concentration of toxin, which will cause people to die instantly, and there will be no time for the dead to ask for help!" Kong Yang looked around and quietly observed all the people present. Then he sat up straight and said solemnly, "So, I hope you will carefully recall the situation at the crime scene, every clue, every detail, including from receiving the police to the school, to going to the crime scene, and then to the scene. Exploration, and finally to the conclusion of the investigation..."

Everyone looked at each other in blank dismay. They wondered why they had to recall the details at the beginning now that the investigation had reached this point.However, this case is indeed full of doubts, and they have to believe Kong Yang, since he said so, there must be his reasons.

As a result, the venue fell into a deathly silence, and only the sound of clothes rubbing against the seat when someone moved their body slightly, and the sound of scratching their head lightly when thinking, could only be heard occasionally.

"Okay, from the time the police arrived at the school, tell them one by one!" Kong Yang said after a moment of silence.

"After we received the report, we rushed to the scene of the school crime, which was the office of the deceased. The door was open at the time, but the door and the stairs were surrounded by school security. I asked, did they see The deceased lay motionless on the table. After confirming that the deceased had stopped breathing, we called the police. We did not call the police until we arrived at the scene. We asked several teachers and students individually, and all the answers were the same. It can be seen that the scene should have been well treated. protection," recalled a case investigator.

"Okay, let's start here!" Kong Yang signaled the investigators to stop, and asked his own question, "Where are the windows in the office? When you went, were the windows in the office open or closed? Has anyone moved?" ?”

"The window was open. According to the testimony of the personnel at the scene at the time, they never entered the office except to test the breath of the deceased, so no one should have touched the window." The investigator replied after thinking briefly.

"Does that mean the windows are always open?" Kong Yang asked back, and glanced at everyone at the same time. This question was aimed at everyone present.

Everyone's eyes were all focused on Kong Yang, and their eyes were full of doubts.

"Impossible!" Finally a voice spoke the answer that Kong Yang wanted to hear, and Kong Yang signaled him to continue, "According to the data, the ground at the scene of the crime was clean, and there was no trace of anything except suspicious shoe prints. Question. But I don’t know if you still have the impression that it rained the night before, no, it was Monday morning to be precise, and the rain was not light. If the windows were not closed, what would happen to the office? It must be damp and messy!"

"Very good! What do you think?" Kong Yang smiled triumphantly, and continued without waiting for an answer, "I remember that I was standing in the only narrow space in front of the window to enjoy the scenery. I didn't think anything was wrong, but when I poked my head out of the window, I immediately felt a hot wind blowing in my face, and it was this strong contrast in temperature that made me suspicious."

"Speaking of the temperature, I felt that the whole building was quite cool at the time, and I could feel it as soon as I entered from the outside." Taohua recalled.

"Yeah, maybe it's the temperature difference between indoors and outdoors that makes us miss this point! It's not surprising that one of the offices is cool when the whole building is cooler. But! Everyone Just imagine, what would happen if the windows were open under the current weather conditions? Would the office still be that cool?" Kong Yang said.

"In this weather, if you don't turn on the air conditioner, even if you close the windows, it will be difficult to maintain that temperature!"

"In other words, the windows at the scene of the crime were only opened on the morning we received the police? They were closed before then, and the air conditioner was still on in the room?"

Everyone began to answer each other's words, and the meeting room became boiling.

"Correct answer again!" Kong Yang replied.

"Then why did the murderer take the risk of doing this?"

"I think the purpose of the murderer's doing this is probably the same as messing up the room to cover up the cause of death of the deceased, in order to disturb our sight and affect our judgment of the real death time of the deceased!"

This time, everyone was not surprised, but nodded acquiescingly.

"So, the real time of death of the deceased is earlier than what we have known before?"

"I'm afraid it is! Because if it's poisoning, you can only attack the deceased when he's eating." Kong Yang took over the conversation and said, "It's clear now that the deceased was poisoned while eating lunch." .Through temperature control, the change of the state of the corpse is delayed, so that the police can misjudge the time of death, and then use the toxicity characteristics of tetrodotoxin to strangle the method, so that we can misjudge the modus operandi.”

"However, if the murderer is Bu Sifei, it's meaningless to cover up the crime with this method, and now it seems that this cover-up method is too rough. In the end, I still let the suspicion fall on myself, which is unreasonable!"

"If it's the same person, this kind of cover-up technique is really rough, but if it's someone trying to cover up another person's criminal facts, this kind of technique is not unreasonable!"

Yes, it is not unwise!

There were three direct or indirect participants in the meal delivery process that day.The rice brought by Bai Lu may have been poisoned at the source; Gu Xin took the initiative to ask Ying to deliver the food, or the poison may have been poisoned on the way, and Bu Sifei is currently inextricably linked to this case, and they are all suspects.

Now that the truth is on the horizon, it looks like it's time to get real.

"Before it's still early, go check the surveillance video on Monday. You should be able to see that someone entered the laboratory building early in the morning, and it was much earlier than the normal class time. Can you find out the pair of shoes, and bring them back by the way. Bring them back first. It seems that the trial cannot be done today. After tonight, the three of them will be tried together tomorrow. As for the relevant procedures, hurry up at the same time. If you can’t do it today Come down and do special things."

So Taohua brought a group of people to the female dormitory building of Wuhu Light Industry University, and went straight to Gu Xin's dormitory. After a brief explanation, she asked the students to clean up the dormitory and collect some women's private items After all, there are male police officers among the search personnel.

Taohua looked around the entire dormitory, the dormitory is not spacious like all student dormitories, four beds with one bed and table are arranged side by side next to the wall, the beds have strong feminine characteristics, the decoration is beautiful, and the floor is also very clean.But even so, Taohua could still see that these girls were similar to him when he was studying, and they were not used to tidying up the dormitory.Some small objects and insignificant clothes were scattered and hung everywhere, and the desktop was also a mess. Although they had notified someone to come in in advance, they did not tidy them up.Gu Xin, Bai Lu, and two other students lived in this dormitory.

"Which bed is yours?" Taohua asked Gu Xin who was standing aside.

Gu Xin, who crossed her hands on her chest, separated her hands, pointed to her bed with the index finger of one hand, and then returned to the posture of crossing her hands, with an innocent and slightly nervous expression, and was silent the whole time.

Afterwards, Taohua walked over, looked up and down, she was just doing routine work, she didn't really suspect Gu Xin, she knew her nervousness was a normal reaction, it was the first time people faced such a battle, nervous It's inevitable, although Gu Xin doesn't seem to be such a stage fright person, she is still a girl after all.

Next to the desk under Gu Xin's bed, there is a small pile of clothes. The pile is obviously a change of clothes, but the height is a bit exaggerated, so there should be something on the bottom, and there is a pair of underwear on the top of the pile!Obviously, it has been notified in advance just now, did you not see such an obvious location and pick it up?

Young people nowadays...

Taohua complained secretly in her heart, even though she herself did not graduate for long.But complaints are nothing but complaints, and the work still has to continue. She slowly removed these clothes by herself.Sure enough, there was a black plastic bag under the clothes, and when she opened the plastic bag, Taohua burst out with joy and surprise - she saw a pair of shoes, a pair of shoes exactly like Bu Sifei's!

Taohua squatted on the spot motionless, just looked up at Gu Xin, and asked, "Is this your shoe?"

Gu Xin nodded slightly and closed her eyes at the same time.From her expression, it can be seen that this is a kind of helplessness, but also a kind of relief, which means that this case must be related to her!

"Come with us!" Taohua said to Gu Xin, and then turned to Bai Lu, "And you!"

Gu Xin looked at Bai Lu. Like Bai Lu, she was very surprised. They didn't understand the reason, but they had to obey the order.

On the other hand, when the investigators investigated the surveillance video on Monday, they found that only a few people had been to the laboratory building on the day of the report, including Gu Xin. The evidence was solid.