Chapter 704: Chapter 704: An Unexpected Discovery
Because according to the evidence from the Crime Scene Investigation, it shows that the killer had been to the scene.
After the victim Zhang Cuilian entered the car and died, the killer opened the passenger side door, took something from the glove compartment, most likely the cash Wang Chuanzhi had put there, and wiped off the fingerprints on the passenger door handle.
In addition, the killer opened the trunk and took out a carbon monoxide generator that might have been prepared in advance.
"Where is Chen Gang?"
Someone asked, "Where is the victim’s husband?"
Zhang Hui shook his head, "Even if Chen Gang could somehow get Wang Chuanzhi’s car keys, he was on a business trip to Tianzhou City the whole time and only returned this afternoon, so he had no time to commit the crime."
Chen Gang only returned to Haizhou City this afternoon.
After finishing a conversation with him, Zhang Hui learned that he was doing some information system maintenance work for the public security system and contacted Tianzhou to confirm Chen Gang’s whereabouts.
Chen Gang left Haizhou City on the morning of the 11th and had been in Tianzhou debugging the system since then.
According to the work plan, he was supposed to finish debugging three days later and then return to Haizhou.
His colleagues and several policemen from the local station vouched for him.
Based on Zhang Hui’s investigation, Chen Gang was completely ruled out as a suspect.
Whether it was Lu Chuan’s speculation that the killer had placed a carbon monoxide generator in Wang Chuanzhi’s trunk in advance, poisoning the two, or some other reason, Chen Gang had a solid alibi.
Furthermore, from Zhang Hui’s interactions with him, Chen Gang showed no unusual reaction regarding his wife Zhang Cuilian.
It seems Chen Gang didn’t know about the relationship between Zhang Cuilian and Wang Chuanzhi.
Throughout the questioning, he never suspected that Zhang Cuilian and Wang Chuanzhi had an affair.
In Chen Gang’s view, this seemed impossible.
During the case analysis meeting, everyone fell into silence.
Based on past case experiences, when an affair leads to death, in the vast majority of cases, the culprit is usually the spouse.
However, according to Zhang Hui’s current investigation results, both spouses had no opportunity to commit the crime.
So how did the two of them die?
"Captain Qin, is it possible, I mean, could it be..."
Someone suddenly spoke up, it was Chen Hao from Group One: "Director Lu and his team found that the fingerprints on the passenger door handle were wiped off at the scene. Could it be that someone passing by noticed something wrong in the car, opened the door, and then took the money?"
"Just a simple... crime of opportunity?"
"Come on, at the entrance to the police department’s family compound? Impossible!"
Li Bing from Group Two disagreed with this viewpoint.
"What’s wrong with it being at the police department’s family compound entrance? Our team lost an electric bike at our gate last year, and no one was ever caught."
"That’s not the same, besides, when Director Lu and his team noticed something was wrong that morning, the car door was locked."
"The car Wang Chuanzhi drove is an old model Volkswagen without an automatic locking feature."
"The killer must have already killed the two by the time they acted; it’s unlikely the deceased locked the car door themselves. So, I think the killer must be someone very close to Wang Chuanzhi, or at least someone who had his car keys."
"After cleaning the scene, they locked the car door and left."
...
They discussed for about two more hours during the case analysis meeting, and by 3:00 a.m., the meeting finally ended.
Looking at Zhang Cuilian’s interpersonal relationships and social interactions, she had no enemies or economic disputes.
It was almost impossible to find anyone who would want to kill her.
On the other hand, Wang Chuanzhi’s interpersonal relationships were more complex.
He is the key target of the subsequent investigations by the action team.
Additionally, they will conduct a comprehensive investigation of all Wang Chuanzhi’s relatives.
After returning to the Crime Scene Investigation office, Lu Chuan saw Yang Lin and Yang Sen sleeping on the sofa.
They were exhausted today.
Old Bai didn’t work overtime and went home at a little after 9 p.m.
He’s close to retirement and can’t keep up anymore, so Lu Chuan didn’t make him stay.
Lighting a cigarette, Lu Chuan’s mind was still full of the case.
Although there isn’t any particularly clear and specific clue at the moment.
Lu Chuan always felt as if the killer was very close by.
The person seemed to be cautious, wiping off the fingerprints from the passenger door and trunk lock.
But there were still many loopholes.
The individual thought of hiding all traces but overlooked some common details.
For instance, how could the killer have easily opened and locked Wang Chuanzhi’s car lock?
As someone said during the case analysis meeting, if the person wasn’t someone familiar with Wang Chuanzhi, how could they wipe off fingerprints and lock the car afterward?
It’s worth noting that when Lu Chuan and his team found Wang Chuanzhi’s body, the car key was still in the ignition.
So the process seemed meticulous, but in reality, it was full of oversights.
Careful, yet somewhat naive.
Once he finished the cigarette, Lu Chuan stretched his stiff neck.
Forget it, he thought to himself, I’ll sleep for a bit and think about it later.
...
By the time Lu Chuan woke up again, it was already past nine in the morning the next day.
"Awake? Yang made you some porridge, and it’s still warm. Get up and have some."
Yang Sen seemed to have been awake for a while and was already making tea.
The Crime Scene Investigation office was only really busy yesterday when they found the bodies.
Now things have calmed down, the scene has been processed, the clues have been gathered, and the fingerprint analysis is complete, so there’s not much left to do in Crime Scene Investigation.
Lu Chuan stretched, rubbed his eyes.
"I’m going to wash my face."
The Criminal Investigation Team’s office was not noisy in the morning.
Most people didn’t go to bed until four or five o’clock last night.
Today’s main task is to investigate Wang Chuanzhi’s interpersonal relationships.
"Director Lu, you’re awake?"
A colleague from the action team greeted him, and Lu Chuan responded to each one.
When he had just been promoted, people weren’t so used to calling him Director Lu.
People used to call him Lu casually.
Now, it hasn’t been that long, but they’ve all gotten used to it.
"Where is Group Leader Zhang?"
"He took people out; it seems there was a new discovery last night, so they went to verify it early this morning."
Lu Chuan nodded and headed to the restroom.
Sometimes, solving cases isn’t just about evidence; you really do need to trust your instincts a bit.
Sometimes a case can be stuck for ages, and a sudden inspiration might lead you to a key piece of evidence, and the case is solved.
Sometimes while doing fingerprint comparisons, Lu Chuan felt the same way.
With extremely blurry fingerprints, just relying on hard technology for comparison and analysis can be very difficult.
It’s not something that can be achieved in one or two days.
Yet, on the odd occasion, when thinking about this particular fingerprint, a spontaneous idea might come up, and adjusting the fingerprint’s marker points might suddenly lead to a successful match.