I am a super cop

Chapter 3011 Mysterious Coincidence
After Gu Chen got out of the car, he walked together with Ding Liang and Huang Zunlong, who got out of the car at the same time.

"You two, help Liu Si arrange accommodation. We can't go into her rented room until the case is fully investigated," Gu Chen said.

“No problem.” Huang Zunlong nodded silently and said without further ado, “Leave this to us.”

"Where's your luggage?" Ding Liang asked.

"It's in the trunk." As Gu Chen spoke, he walked directly to the trunk of the car and took out Liu Si's luggage.

At that moment, Liu Si, who was sitting in the back row, also came out.

Ding Liang took the suitcase from Gu Chen and placed it directly in the back of his vehicle.

Gu Chen walked up to Liu Si and reminded her, "Follow them, they will arrange a place for you to stay."

"Please make do with the place we've arranged for you during this time."

"Okay, thank you." Hearing Gu Chen's words, Liu Si nodded and bowed to express her gratitude.

"Go with them. Please keep your phone on 24 hours a day so it will be easier for us to find you."

"Yes, I will." Seeing that Gu Chen had a request, Liu Si nodded in agreement.

Afterwards, everyone watched as Liu Si got into Ding Liang and Huang Zunlong's car and slowly drove out of the community gate.

Seeing this, Lu Weiwei sighed and said helplessly, "There's nothing we can do. Liu Si's investigation is flawless, which means we've lost another target."

"Think carefully. If it's a murder, how did the killer succeed? After all, there were no conditions for committing the crime at the scene." Officer Wang was also extremely anxious at this moment.

After all, having handled so many cases, none of us had ever encountered such a bizarre manner of death before.

It seems that the two were poisoned without anyone knowing, and no clues could be found.

It's worth noting that when the two died, the takeout food on the table was still unopened, and the computer in the room was still on.

It is clear that the two were forced to inhale large amounts of carbon monoxide without their knowledge, ultimately leading to their death from carbon monoxide poisoning.

Furthermore, according to repeated confirmations by forensic pathologist Gao Chuanfeng, the two died from carbon monoxide poisoning.

These survey results have presented everyone with a huge challenge.

"We must start with the modus operandi. There must be other methods involved, unconventional methods," Gu Chen said, arms crossed, deep in thought.

At this moment, Officer Wang pondered, "Could it be that the murderer used other methods to allow gas to enter the house, causing the two people to die from poisoning?"

Upon hearing this, Yuan Shasha asked curiously, "What are your thoughts, Senior Brother Wang?"

Officer Wang looked at the building and pondered, saying, "Could it be that the murderer introduced gas into the sixth-floor room, causing Pan Xu and He Lili to be poisoned?"

"Senior Brother Wang, could you please be more specific?" Gu Chen asked, humbly seeking guidance.

At this moment, Officer Wang thought for a moment and pointed to the fifth floor, saying, "Pan Xu and He Lili live on the sixth floor, so the floor that could affect the carbon monoxide poisoning on the sixth floor is probably the floor adjacent to the sixth floor."

Looking back at Gu Chen and the others, Officer Wang pondered and said, "Could it be that the murderer connected the pipe to the ventilation vent on the fifth floor, and then connected the other end of the pipe to the sixth floor?"

"If the fifth floor uses gas cylinders, then the gas will be vented to the sixth floor?"

"Wouldn't the fifth floor be a suspect?" Lu Weiwei asked, curiously listening to Officer Wang's analysis.

But after crossing his arms and observing the building for a while, Gu Chen shook his head:
"While this speculation has some merit, it's impossible to predict the frequency of gas cylinder usage on the fifth floor."

"Moreover, it would be difficult to install a pipe from the kitchen exhaust vent on the fifth floor to the sixth floor, and it would also be easy to be discovered."

“That makes sense.” Gu Chen’s analysis essentially negated his own thinking. Officer Wang nodded silently and continued:

"Could it have been done by an insider? Like Liu Si, who just left?"

“But Liu Si didn’t have time to commit the crime,” Yuan Shasha said.

"Yes, that's the difficulty," Officer Wang said, scratching the back of his head.
"My initial conclusion was that Liu Si was trying to kill Pan Xu and He Lili because she didn't get along with them."

"So the day before I left, I secretly turned on the gas and then closed all the windows in the room."

"Liu Si can take advantage of this time to go out directly. When the gas leak reaches a certain concentration, she can cover her mouth and nose with a wet towel, return to the room, and turn off the gas. This will create a time difference."

"In this way, the room will be filled with a large amount of carbon monoxide, and Liu Si can leave directly to travel to other places after completing the operation."

"This creates a time gap, so that when He Lili and her boyfriend Pan Xu return home, they will die from carbon monoxide poisoning due to inhaling too much carbon monoxide."

“But Senior Brother Wang, we’ve checked the gas cylinder. No one has used it recently. The valve isn’t leaking, and the switch is covered in dust,” Gu Chen reminded him.

"Yes." Hearing Gu Chen's explanation, Officer Wang sighed and said helplessly, "This is also what's giving me a headache, because such an operation is feasible."

"But the only problem is that we need to turn on the gas cylinder switch, which requires unscrewing it. However, we have checked and the gas cylinder valve is sealed and covered with dust, indicating that the gas cylinder has not been used for a long time."

With a sigh, Officer Wang added, "So without this condition, none of my hypotheses and reasoning can be realized."

Scratching his head, Officer Wang couldn't help but sigh, "This is really annoying. I have no idea what's going on."

Just as everyone was struggling with this, Gu Chen suggested, "Why don't we ask the other residents in this community to see if they have noticed anything unusual?"

"That's the only way," Lu Weiwei sighed, echoing Gu Chen's suggestion.

After all, he had never seen enough of such bizarre methods of murder.

The main problem is that the deaths of Pan Xu and He Lili are too suspicious, and there are simply no clues to follow.

It seems absurd to try to find the cause of death for two people under completely invalid conditions.

Since there were no clues, everyone decided to ask the residents of the building to see if anyone knew anything about the two of them recently.

Gu Chen and his group stood at the exit of the apartment building. After thinking for a while, they decided to go to each household in the building to inquire.

Just as everyone was about to leave, they heard the door of a resident on the first floor being opened.

An older woman came out from inside.

Seeing this, Lu Weiwei quickly stepped forward and started chatting with the older woman: "Auntie, do you know the residents on the sixth floor?"

As Lu Weiwei spoke, she also showed photos of Pan Xu and He Lili.

"The residents on the sixth floor?" The older woman glanced at Lu Weiwei's phone, and said thoughtfully, "I think I've seen them before. I've run into them a few times around this building, but I don't know them well. What's wrong?"

Gu Chen quickly stepped forward and said, "They died of carbon monoxide poisoning. We want to investigate the cause of their deaths..."

"What? Carbon monoxide poisoning?" The old woman was stunned for a moment as soon as Gu Chen finished speaking. "Yes, carbon monoxide poisoning," Yuan Shasha echoed.

"What happened? How come someone on the sixth floor is missing too?" Hearing the police say this, the old woman's face turned ugly.

Upon hearing this, Gu Chen and the others sensed that the woman's words implied something else, suggesting that there was more to the story.

So Gu Chen quickly asked again, "Auntie, you just said that someone on the sixth floor is also dead? Could it be that other people in this building have died?"

“Yes, just a few days ago, the tenant who lived across from me also suddenly passed away. How come someone died on the sixth floor too? I didn’t even know about this.”

"You mean, someone died across the hall from you?" Upon hearing this, Officer Wang's head was spinning, and he felt like he had misheard.

Seeing the older woman nod silently, Gu Chen quickly asked, "But ma'am, how could you not know that someone on the sixth floor died of poisoning?"

"Because I had just returned from a trip a few days ago, I only found out about it when I ran into the neighbor's sister while I was buying groceries."

"Is that so?" After hearing what the woman said, Gu Chen asked again, "What did the deceased's sister say?"

"It seems... it was a sudden death. After all, that resident worked outside every day, and it's possible that he had a heart condition and died suddenly. He was taken away that same day."

"What was the date of death?" Gu Chen frowned and quickly asked.

“It was…last Saturday,” the woman said.

"Last Saturday?" Upon hearing this result, Yuan Shasha was stunned for a moment, and quickly reminded Gu Chen:
"Senior Brother Gu, last Saturday was also the time of Pan Xu and He Lili's deaths."

"That's right." Hearing Yuan Shasha's reminder, Gu Chen suddenly realized and couldn't help but sigh:
"So that means that all three people from these two families died on the same day?"

"What's going on?" Upon hearing Gu Chen's words, the older woman suddenly became somewhat frightened.

So Gu Chen quickly asked the woman, "Do you have the contact information for the deceased's sister who lives across the hall?"

"Yes, I have their contact information." The woman nodded vigorously.

So he quickly took out his phone to check.

Before long, the woman found the phone number and quickly handed it to Gu Chen, saying:

"This is it, this phone number belongs to the deceased's sister."

"Okay, thank you." Gu Chen quickly wrote down the phone number and dialed it.

Shortly after, the call connected, and Gu Chen quickly began communicating with the other party:
"Hello, I am Officer Gu from the Furong Branch of the Jiangnan City Public Security Bureau. Are you Ms. Jiang?"

"My surname is indeed Jiang. May I ask what business you have with me?"

"Did your brother suddenly die at home last Saturday?" Gu Chen asked.

"Yes." The woman's voice on the phone still carried a hint of sadness.

"What's wrong with him?" Gu Chen asked quickly.

"It was sudden death," the woman on the phone said.

"Are you sure?" Gu Chen hesitated for a moment, but still asked.

After all, this woman's brother died on the same day as Pan Xu and He Lili, who lived on the sixth floor.

This makes it hard for Gu Chen not to suspect that the deaths of the two groups are somehow related.

After all, there may be many coincidences, but the probability of death times coinciding is rare.

Moreover, all three of them lived in the same building and the same unit.

This made it difficult for Gu Chen not to have suspicions.

During the phone call, the woman slowly said, "My younger brother works in the decoration industry. He used to work in another city, but this year he came here to look for work because he finished the project there."

"Because I have been doing vegetable wholesale here for many years, my younger brother came here to stay with me. Since my family couldn't fit everyone in, my brother rented a house nearby."

After a pause, the woman replied again, her voice choked with sobs: "But I never imagined that my brother would die suddenly from overwork."

"Okay, please accept my condolences." Hearing the woman's words, Gu Chen first offered a word of comfort, then quickly asked:
"And what about your brother's body?"

"He has already been cremated," the woman on the phone said.

"He's already cremated?" Upon hearing this, Gu Chen felt as if he had been struck by lightning.

"Yes, my brother's body has already been cremated, what else could we do?" the woman on the phone said.

"Alright." Hearing the woman say that, Gu Chen said without hesitation, "The body originally needed to be examined."

“That will cost money, right? He died suddenly, what’s the point of checking him? My family is urging me to cremate my brother’s body and bring it back home. I’m still in my hometown helping with his funeral arrangements.”

"Okay, thank you for your cooperation." Gu Chen took a deep breath, thinking that once the body was taken away, the relevant community police officers would come to contact them. So Gu Chen asked the woman again:

"Your brother's body was taken away for cremation. Have any police officers come to investigate?"

"Yes." Upon hearing Gu Chen's reply, the woman on the other end of the phone quickly explained:
"Police officers from the jurisdiction came to investigate the situation."

"Then what do you mean?" Gu Chen asked.

"Because we were in a hurry to dispose of my brother's body, the police only conducted a brief investigation according to procedure, and then we took my brother's body to be cremated."

"Okay, thank you for your cooperation. If there are any issues, I hope I can contact you anytime."

"Ok."

Gu Chen exchanged a few words with the woman on the other end of the phone before hanging up.

Lu Weiwei and the others standing to the side also heard the conversation. Lu Weiwei said in an annoyed tone:

"Why are you in such a hurry to cremate the body? The body has already been cremated, aren't you going to do an autopsy? That's too perfunctory."

"Don't worry." Seeing Lu Weiwei's anxious expression, Gu Chen quickly said:

“The local police have handled this, so there should be a record of it. Let’s call and ask,” Gu Chen said.

"That's all we can do," Officer Wang said with a sigh.

Then, based on the location of the community, Gu Chen dialed the phone number of the police station in charge of the area.

……