Detective: I, Cao Jianjun, started by arresting my brother-in-law.

The port detachment arrived very quickly.

Right after lunch, the special task force investigating the murder case involving sex in a car was established.

Zhao Xincheng from the Haigang Detachment, along with consultant Han Bin, arrived at the Changfeng Detachment with a group of people.

The group chose a garage as the venue for their investigation.

Upon meeting, the two sides exchanged pleasantries for quite some time.

Zhao Xincheng and Zhou Xun were classmates and comrades-in-arms, and they teased and joked with each other.

the end.

Zhao Xincheng then noticed Cao Jianjun and immediately felt a deep respect for him.

"Hey! Captain Cao, I'm so sorry, I didn't see you earlier."

As she spoke, Zhao Xincheng took the initiative to reach out and shake hands with Cao Jianjun: "We in Haigang have heard about the Qi Weidong case that you solved a few days ago."

"Wow, you're a genius! You solved a murder case in just over ten hours. I'll have to learn a lot from you in the future."

After speaking, Zhao Xincheng turned to introduce the man behind her. He was dressed in a black long robe, wore black-rimmed glasses, and was refined yet slightly gloomy.

"Captain Cao, let me introduce this to you..."

"I know."

Before Zhao Xincheng could finish speaking, Cao Jianjun proactively extended his hand: "Han Bin, the son of Han Songge, a famous criminal investigation expert in China, can be described as a tiger cub from a military family."

Hear the words.

Han Bin was clearly surprised that Cao Jianjun knew him and reached out his hand in astonishment.

"Captain Cao, you flatter me. I'm just here to fill in the gaps in my father's name."

Han Bin is a character who is both righteous and evil in "Day and Night".

However, based on the available information, it is impossible to make an absolute judgment on what role it plays.

But Cao Jianjun knew that Han Bin was a key figure in solving the 2.13 case and could not be ignored.

"Um... now that everyone has introduced themselves, Captain Cao, Lao Guan, Lao Zhao, shall we begin?"

Zhou Xun was an impatient person. After everyone finished exchanging pleasantries, he immediately clapped his hands and said, "Xincheng, come here and introduce the case to everyone."

"Okay! I'll go first."

Zhao Xincheng didn't stand on ceremony, holding the case file and watching everyone begin.

"Two years ago, on the same day, but not on a rainy day, two bodies were found, also inside a car."

"To be honest, the man was still wearing his clothes and pants when he was murdered..."

"But damn... haha, the guy's... he's wearing an umbrella..."

Zhao Xincheng was extremely happy when she spoke.

But when he saw that there was a policewoman there, he immediately shut up and coughed.

"The woman... when she died, she still had that in her mouth... haha..."

Halfway through her sentence, Zhao Xincheng realized she had lost her composure.

He quickly adjusted his tone and continued, "In short, it's very similar to the case that happened today."

"A year ago, it was a rainy day, in a car, and there was a man and a woman."

"I reviewed the case files of three cases, and in each case, the killer neatly arranged the bodies after committing the crimes..."

"Moreover, no evidence of the murderer was found at the scene of any of the three cases; there were no fingerprints or hair samples."

After the general details of the case were explained, everyone fell silent.

A moment later, Guan Hongfeng and Han Bin began to discuss their views.

Based on the victim's fatal wounds, the two determined the killer's modus operandi and deduced the killer's obsessive-compulsive disorder.

Cao Jianjun sat to the side, not saying a word, listening attentively.

After discussing the case for more than an hour, everyone had said what they needed to say and expressed what they needed to express.

However, the investigation has reached a stalemate.

Because the murderer used the same method in all three crimes, without any change.

It's important to know that there's a one-year interval between each case.

This is very unusual.

"Captain Cao..."

When the case analysis reached a stalemate, Zhou Xun patted Cao Jianjun on the shoulder and asked, "Tell me, have you made any new discoveries?"

"I'm thinking……"

Cao Jianjun said with a solemn expression, "According to the theory of criminal behavior, if a murderer commits a series of crimes, there will be changes in the methods used."

"In other words, the more people a murderer kills, the more streamlined his methods will become."

"But this murderer has committed three murders over three consecutive years without changing his ways. Why is that?"

"Or, is the murder case involving sex in a car two years ago the killer's first case?"

"Is it possible that we haven't yet found the killer in the first case?"

As soon as he finished speaking, everyone was startled and immediately began to look at each other.

"Investigate! Investigate..."

After Zhou Xun realized what was happening, he said excitedly, "Old Zhao, you guys check 5.2 harbor, we'll check Changfeng."

"Looking at the cases that have occurred over the years, let's see if any similar cases have happened..."

"Captain Cao is right. The killer's first case might not necessarily be the car sex murder. Could it be something else?"

The case, which had reached a stalemate, suddenly became clear after Cao Jianjun's analysis.

Without hesitation, Zhao Xincheng immediately called the Harbor Branch to begin a thorough investigation of similar cases that had occurred over the years.

Zhou Xun also began investigating the cases that occurred in Changfeng District.

Guan Hongfeng and Han Bin, the two criminal investigation consultants, exchanged a glance before turning their attention to Cao Jianjun.

"Captain Cao, seeing you in person is truly an eye-opener. I've learned a lot."

As he spoke, Han Bin extended his hand again: "I have seen what you did at the commendation ceremony. Even my father said that you are the real genius of criminal investigation."

"You flatter me. Compared to Master Han, I am just a beginner."

Cao Jianjun stood up and smiled politely.

199. Policewoman Zhao Qian arrives, Brother Cao's first target [6 chapters, please subscribe]

Just how important is Han Bin?

Cao Jianjun once tried to list him as the third suspect in the Wu Zheng family murder case.

It's not that this person is actually the murderer, but he is definitely closely related to the mastermind behind the murder.

However, the extent of the connection remains to be verified by Cao Jianjun step by step.

The investigation into the murder case involving sex in a car has begun, and now it's time for field investigators and technical investigators to get busy.

Cao Jianjun seemed a bit bored, so he returned to the Changfeng branch with Guan Hongfeng, Han Bin, and others.

The three of them had just entered the room when a short-haired policewoman in uniform arrived with great efficiency.

Following closely behind, Zhou Xun and Xiao Wang, carrying a thick stack of case files, also caught up from behind.

"Oh! Zhao Qian?"

Upon seeing the policewoman, Zhou Xun paused for a moment, then quickly turned around and said, "Come, come, let me introduce you to everyone..."

"I specifically recruited the graduate student majoring in criminal investigation from the Tianjin Port Police Academy."

After saying that, she turned around and said, "Zhao Qian, I used to think that it might be a waste of your talents to come to our Changfeng Detachment, but now I don't think so."

Changing the subject, she pointed at Cao Jianjun and said with a smile, "Do you know him?"

"Team Leader Cao."

Zhao Qian smiled and raised her hand to salute Cao Jianjun.

"When I was in police academy, I watched the live broadcast of the National Police Commendation Conference. Everyone in our 04 class knew about your deeds."

"Moreover, it was because of you that I wanted to come to the Changfeng branch."

"Captain Cao, you are my idol."

This young girl was only a few years older than Zhou Shutong, but her words and actions were much more mature than Zhou Shutong's.

It seems he has practical experience in criminal investigation.

"Don't dare!"

After saluting, Cao Jianjun shook Zhao Qian's hand: "As the deputy captain of the Changfeng Detachment, I also welcome you to join us."

Zhou Xun then introduced Zhao Qian to Guan Hongfeng, Han Bin, and the other members of the team.