Chapter 598 Zhou Junjie, Let’s Chat?

After changing a pair of gloves, Chen Yi went downstairs to the hall, where six people sat around the table, including Qin Fei.

Seeing Chen Yi appear, everyone looked over, and the boss Wu Changchun and Zhou Junjie thought they had found something.

When passing by, Chen Yi didn't say much, just asked where Wu Rui was at the moment, and learned that he was in a daze in his room.

This is Wu Rui's habit. At noon, he would basically stay in the room and daze, immersed in his own world.

After going out of the door and going around to the backyard, Chen Yi looked up at the window of the room where Wang Yingjie was, and then looked at the layout of the items in the backyard, and calculated the landing point based on the angle and strength.

Thinking from another perspective, how would the murderer deal with the tape used to seal Wang Yingjie's mouth?

It is definitely impossible to keep it around, it is too dangerous, and once it is found, it will be the primary suspect, and it must be destroyed or thrown away.

It is more difficult to destroy, and it is easier to throw it away, as long as it is not kept around.

Even if it is left at the scene, the police cannot determine who the owner of the tape is, but no remaining tape was found at the crime scene.

So, could it be thrown into the backyard through the window after the crime?

There is such a possibility.

That is why he came to the backyard, to try to find it.

If he can't find it, he will search the room of the boss Wu Changchun's family of three. If he can't find it, he will wait for the police to arrive and there will be enough support to conduct a comprehensive search of the entire inn.

After a while of judgment, Chen Yi retracted his sight.

Throwing away things that you don't want to be found by the police, you will subconsciously throw them in places with a lot of debris, so the warehouse and large open spaces can be ignored, and there are no suspicious items at a glance.

Chen Yi started from the beginning and moved forward little by little, focusing on the corners and gaps that can accommodate small items.

The result was much smoother than expected. Just after searching for a while, Chen Yi paused, bent down and reached through the messy farm tools, and picked up a rubber ring on the ground through the gap.

The rubber ring is transparent and the width is the same as the tape that sealed Wang Yingjie's face.

It is it.

Chen Yi came closer to carefully observe the position of the tape break. He seemed to have discovered something. He was stunned for a moment, then raised his mouth and put the rubber ring into the evidence bag.

This case should be solved. The murderer's plan was not thorough enough and he was too nervous, which led to a huge mistake.

The rubber ring in the evidence bag was judged to be bitten open by teeth.

This is a habit of many people. It is very convenient to tear the tape with teeth.

However, in this case, there is a high probability that DNA will be left at the break of the tape.

All organs of the human body will continue to metabolize without stopping. The shed cells are the products of metabolism, which contain DNA and can be extracted through saliva and other body fluids.

Ironclad evidence.

If DNA can be extracted from the break of the tape, the identity of the murderer can be locked after comparison.

But now... it is hard to say who the murderer is.

If you want to find the murderer before detecting the break of the tape, you need more clues.

Through clues, you can infer the most suspected perpetrator, and then use the tape evidence to interrogate, which is likely to break the other party's psychological defense.

The direction of the investigation of this case is very clear. Chen Yi can foresee everything from the investigation process to the results.

Returning to the lobby of the inn, Chen Yi kept walking when he passed by several people, but he walked slowly. He deliberately held the evidence bag with his left hand to expose the contents of the evidence bag to everyone's sight.

Just look and you can see what is in the evidence bag.

Sure enough, out of curiosity, the five people looked over and stared at the things in Chen Yi's hand. From their expressions, there was nothing unusual.

However, Zhou Junjie shifted his gaze very quickly. His eyes only touched the evidence bag for less than a second and then he immediately retracted them. On the other hand, the other four people were still looking at Chen Yi until he walked away, as if they were wondering where the other party got the tape from and what the tape had to do with Wang Yingjie's death.

Zhou Junjie was the only one who had seen the scene of Wang Yingjie's death. They didn't know that Wang Yingjie's face was covered with transparent tape.

Going up the stairs, Chen Yi looked back at Zhou Junjie before he disappeared.

This person's suspicion is getting bigger and bigger. If nothing unexpected happens, it should be him.

In the early morning, Wang Yingjie was yelling in the room. Zhou Junjie went into the room to comfort him. After Wang Yingjie fell asleep and everyone left, he returned and slowly put tape on Wang Yingjie's face, and then pierced his heart with a knife.

Wang Yingjie struggled and fell off the bed and died. Zhou Junjie came to the window and threw away the remaining tape. The tape fell into the pile of debris in the backyard. Finally, he returned to his room and flushed the disposable gloves into the toilet.

A few hours later at noon, he became the one who discovered the body.

Why not just use the toilet in Wang Yingjie's room?

Because you can't take off your gloves to prevent fingerprints from being left in various places.

There is a problem here.

Peng Xiao, who can barely be regarded as a witness of alibi.

Zhou Junjie and Peng Xiao slept in the same bed. How dare he leave in the middle of the night to kill people? Wasn't he worried that Peng Xiao would wake up?

For such a big thing, was he betting on how deep Peng Xiao was sleeping?

Or was Peng Xiao an insider and participant?

With doubts, Chen Yi returned to the room where Zhou Junjie and Peng Xiao were. At this time, He Shixin and Teng Dabin were still searching and had not found anything new.

Chen Yi came to the left side of the bed near the window. This was the location of the bedside table. There was a glass of water on the bedside table. He picked up the glass and tilted it to observe. There was about ten milliliters left.

Bending down, he sniffed the pillow next to him. There was a residual fragrance of a woman on it. This was where Peng Xiao slept.

Then this glass of water was drunk by Peng Xiao.

Holding this glass of water, Chen Yi left the room.

If Zhou Junjie was the murderer of Wang Yingjie, then there were three possibilities for him to dare to leave the room and kill in front of his girlfriend Peng Xiao.

First, bet that Peng Xiao would not wake up.

Second, conspiracy.

Third, make sure that Peng Xiao would not wake up.

Chen Yi would not let go of any situation. If there was a suspicious substance in the water cup used by Peng Xiao, then Zhou Junjie drugged her.

It is still easy to buy sedatives.

Drinking clear water with sedatives, let alone sneaking out of the room, even if there is a big noise, it is difficult for Peng Xiao to wake up.

This is the safest way.

Therefore, if the suspicion is correct, Zhou Junjie is really the murderer in this case. Either the two conspired, or Peng Xiao was drugged.

Arriving at the crime scene, Wang Yingjie's body was lying there alone, and Su Ying was standing at the table fiddling with bottles and jars of different colors. If she wore a white coat, she would look like a scientist doing experiments.

Apparently, she brought a lot of reagents for backup, and her work attitude was proactive, taking responsibility for herself and others.

Seeing Su Ying's serious look, Chen Yi did not interrupt, gently put down the cup in his hand, and looked at Cheng Hanjun.

Cheng Hanjun came over and whispered: "No footprints of the suspected murderer were found. There are many and mixed fingerprints on the door handle. Metal door handles are very easy to leave fingerprints and can be retained for a long time. They should be from the innkeeper and other guests."

Chen Yi: "Speaking of the key points, skip the nonsense."

Cheng Hanjun was embarrassed for a moment and said: "The latest fingerprints have been successfully extracted. I remember that the last two people who touched the door handle were Zhou Junjie, right? If the murderer is him, it will be difficult to deal with it."

Chen Yi: "There are no footprints of the suspected murderer... Did he wear shoe covers?"

Cheng Hanjun nodded: "It should be. The murderer was well prepared and had planned to kill Wang Yingjie. Since it was planned, it is unlikely that the boss and the boss's wife did it."

Chen Yi took out the evidence bag: "The remaining tape was found in the backyard. The murderer bit it open with his teeth."

Su Ying reacted quickly and looked up immediately: "Use teeth? Then the case is solved, right?"

Chen Yi looked at her: "Finish your work."

Su Ying hummed and continued to test.

Cheng Hanjun also realized that it was only a matter of time before he could find out the murderer's identity after obtaining his DNA. However, Xigui County was remote and economically developed, so it was probably not equipped with DNA extraction and testing technology, so it needed to be sent to the city.

In this case, it could be handed over to the Xigui County Criminal Investigation Brigade for processing.

"Team Chen, take the tape and ask, the murderer should admit it." Cheng Hanjun said.

Chen Yi: "Don't worry, there are still some doubts that have not been clarified."

The room was quiet, with only the sound of Su Ying's operation.

About five minutes later, the three beakers in front of Su Ying began to change color, and the solution showed cherry red. As time passed, the color gradually deepened.

"It is indeed nona root." Su Ying said.

"Phenergan?" Chen Yi was slightly stunned, searched his memory, and quickly remembered, "Promethazine hydrochloride?"

Su Ying put down the beaker in her hand and nodded: "Yes, an antihistamine that can treat various allergies such as asthma, urticaria, etc., and can also be used in combination with other drugs for artificial hibernation."

Cheng Hanjun heard a new term: "Artificial hibernation?"

Su Ying explained: "Artificial hibernation is a medical treatment method that has a miraculous effect on severe traumatic infection. It is not literal artificial hibernation."

"Oh oh..." Cheng Hanjun nodded, "Forensic Doctor Su, does that mean Wang Yingjie took phenergan before his death?"

Su Ying was surprised Yi: "What else? Then what was I testing just now?"

Cheng Hanjun was used to Su Ying's personality and didn't care. He asked: "Does this have anything to do with this case?"

Su Ying: "Excessive doses of phenergan have serious side effects, such as drowsiness, confusion, blurred vision, dizziness, headache, nightmares, anxiety, etc. The effect is stronger if taken with coffee.

You see, there is a coffee drink. I used three beakers to test at the same time. There is indeed phenergan in the coffee drink bottle.

The last beaker is the white powder on the paper sent by Captain He.

It's all phenergan."

As she said, she pointed to the drink bottle and paper on the table.

Cheng Hanjun immediately understood: "Wang Yingjie's madness in the early morning was because he drank coffee mixed with phenergan? So he overreacted."

Su Ying didn't say anything and looked at Chen Yi.

Chen Yi touched his chin and said, "Strange, was it Zhou Junjie who gave him the drug? Phenergan is not lethal, so why did he give Wang Yingjie Phenergan?"

Su Ying: "It's hard to guess. Just ask. Phenergan was found in Zhou Junjie's room, but there are two people living in Zhou Junjie's room."

The implication is that Peng Xiao is also a suspect.

Chen Yi nodded slightly: "Phenergan is a small matter. Let's focus on the murder first. Su Ying, help me see if there are any conventional sedatives in it."

"Okay."

Su Ying reached out and took the cup, divided the small amount of liquid in it into four equal parts, and then skillfully titrated the reagents into it. The four reagents were different.

After finishing, she bent down slightly to observe closely, and quickly picked up one of the cups. The liquid in it showed orange-yellow and was slowly turning orange-red.

In just a few minutes, the results came out.

"Yes, it's phenobarbital."

When Su Ying's voice sounded, Chen Yi took a look at the reagents used to titrate phenobarbital: sulfuric acid and sodium nitrite.

Cheng Hanjun was shocked and couldn't help blurting out: "So awesome?"

Su Ying asked: "Are you talking about me?"

Cheng Hanjun: "Yeah, this is too fast, how do you know it's phenobarbital?"

Su Ying had a blank expression and answered calmly: "I didn't know it was phenobarbital. Captain Chen just mentioned conventional sedatives, and there are four types of conventional sedatives, diazepam, phenobarbital, clonazepam, and nitrazepam, so I divided it into four parts and confirmed them one by one.

Each sedative has a specific reagent detection method. Using the knowledge in the book, you can get the results quickly. Isn't this simple? Why do you look so surprised?"

Cheng Hanjun: "..."

He glanced at Chen Yi beside him. The other party chose Su Ying from tens of thousands of forensic doctors. It was really a correct decision. He had a sharp eye.

It sounds simple, but it is not that easy to do. After all, there are countless drugs in the world. You need to master a vast amount of knowledge and use it skillfully to calmly solve any sudden problems.

Today I encountered phenobarbital, but it will not be the case next time.

Chen Yi seemed not to hear the conversation between the two. He picked up the liquid that had turned orange-red. His speculation about the crime process was very clear.

"Let's go, gather on the first floor." After looking for a while, he put down the cup, "It seems that the case can be solved without waiting for the Shuishi Town Police Station to arrive."

Ten minutes later.

The lobby on the first floor.

Calculating the time, the Shuishi Town Police Station should be arriving soon. Now is the interrogation time.

The five people each got a chair and sat in front of the special case team in a semicircle. They were far away from each other to prevent the murderer from making a desperate move. If anyone dared to take action, Teng Dabin and others could respond instantly and control him.

In order to ensure the formality of the procedure, the special case team formally showed the police officer certificate for the other party to confirm.

"I will only give you one chance." Chen Yi looked at the five people and said, "If you refused to surrender before, then be prepared to bear the consequences of murder.

Even if you come forward and surrender now, it's too late."

When he spoke, his eyes were focused on Zhou Junjie.

The five people were relatively calm, but they were inevitably cramped and nervous after experiencing the murder case and facing the police in person.

At this time, Qin Fei stood up and walked over, showing the photos of the murder weapon taken at the scene to the boss Wu Changchun, and asked: "Do you recognize it?"

Wu Changchun observed carefully for a moment, and his face changed: "Recognize...recognize it, it's the knife in my kitchen, no no...we didn't kill him, we didn't kill him!"

The four of them looked at Wu Changchun together.

Qin Fei returned.

Chen Yi signaled Wu Changchun to calm down: "I didn't say you killed him, Zhou Junjie, let's talk? You were crazy last night, you went to the kitchen to steal a knife and kill someone."

Everyone's eyes instantly focused on Zhou Junjie. Wu Changchun and the proprietress, who were relieved, turned to be surprised. Could a friend who seemed to have a good relationship with him be the murderer?

Peng Xiao and Fan Wen were also stunned, with a look of doubt on their faces. Fan Wen even subconsciously moved away from Zhou Junjie.

"Junjie, you..." Peng Xiao couldn't believe it.

Zhou Junjie was dumbfounded, looking at a loss: "Me? I have been in the room the whole time, right Peng Xiao?"