Solving the case: Combining the police dog's olfactory genes at the beginning

Early in the morning, Luo Fei held the letter of appointment in his hand.

Chen Xuan hummed a little tune as he drove, tapping his fingers on the steering wheel to the beat.

"Are you so happy?"

Luo Fei folded the appointment letter and put it into his inner pocket.

"Of course!"

Chen Xuan slammed his hand on the steering wheel.

"Transferring from Xiaohegou Police Station to the Municipal Criminal Investigation Team is like a carp leaping over the dragon gate! Do you know how many people would kill to get in?"

Luo Fei looked out the window at the rapidly receding street scene and didn't reply.

Three years after that operation, he voluntarily applied to be transferred from the criminal investigation team to a local police station. He thought that was the end of his life, but unexpectedly, he came back after going around in circles.

"Speaking of which, Captain Wan has really been kind to you."

Chen Xuan glanced at the silent partner.

"According to the rules, newcomers start from the bottom, but you went straight for a private office."

"That's for work purposes."

Luo Fei said calmly.

"Some cases require a quiet environment to think about."

Chen Xuan pursed his lips.

"Come on, you just find it noisy. Back in the creek, you always frowned whenever I played music."

Wan Qiang was already waiting on the steps in front of the Municipal Public Security Bureau building.

The captain of the second criminal investigation team was in his early forties.

"coming!"

Wan Qiang strode forward and patted Luo Fei's shoulder forcefully.

"It's been three years, and you're still the same old you."

Luo Fei's lips twitched almost imperceptibly.

"Team Leader Wan."

"Come on, let me introduce you to your new colleagues."

Wan Qiang put his arm around the two of them and led them into the building.

"As per your request, we have arranged a private office for the two of you, right next to the Second Team's general office."

Inside the elevator, Chen Xuan couldn't help but ask.

"Captain Wan, I heard that the Second Criminal Investigation Team has the highest case-solving rate in the entire bureau?"

Wan Qiang laughed heartily.

"That's right! Last year, our case-solving rate was 92%, which was 8 percentage points higher than that of Team One. That made Zhang Zhigao so angry that he couldn't sleep well for three days."

Luo Fei noticed that Wan Qiang's expression was gloomy when he said this, but it vanished in an instant.

The elevator stopped on the seventh floor, and as soon as the three of them entered the general office, the previously noisy room immediately became quiet.

More than twenty pairs of eyes turned to the doorway, some curious, some scrutinizing, and a few clearly hostile.

"Come over here and get to know our new colleague!"

Wan Qiang clapped his hands.

"This is Luo Fei, who used to work in the provincial department and solved several major cases. This is Chen Xuan, an elite officer from Xiahegou Police Station."

A man in his thirties with a stern face stood up from his seat.

"He Liang, deputy captain."

Luo Fei keenly noticed that He Liang's handshake was very firm, and his eyes held a scrutinizing gaze and a barely perceptible hostility.

"Cheng Yunchuan, in charge of intelligence work."

A tall, thin man wearing black-rimmed glasses pushed up his glasses.

"I have long admired my name."

Luo Fei nodded. He had heard of this intelligence expert, who was said to be able to extract crucial information from the most inconspicuous clues.

"Deng Yunzhou, Technical Section."

A young man with messy hair fiddled with the equipment in his hands without looking up.

"Gao Xiaowei, criminal investigation."

A burly man with dark skin grinned, revealing two rows of white teeth.

"Chen Ziqiang, head of the action team."

The muscular middle-aged man had a loud voice, and Luo Fei could feel the calluses on his palms when they shook hands.

"Li Shangjun is in charge of cybercrime."

A pale-faced young man pushed up his glasses, the lenses reflecting the blue light of the computer screen.

The last one to stand up was a policewoman with a ponytail.

"Li Ya, the handyman, just say the word if you need anything."

She blinked, her tone relaxed, but Luo Fei noticed that her gaze was sharp and her posture upright, indicating that she was definitely not a simple "odd jobs" person.

Wan Qiang added.

"There are more than 30 comrades in the action team in the next office. Our Criminal Investigation Corps also has the Evidence Section, Equipment Section, Logistics Section, Forensic Department, etc. You can get familiar with them gradually."

Luo Fei looked around.

"Chen Xuan and I will go to the office to tidy up first."

Wan Qiang waved his hand.

"No rush. You've just arrived. Let's familiarize yourselves with the environment first and help with a few cases before we talk about anything else."

After the two left, whispers immediately filled the office.

"They got a private office right away, what's their background?"

A young police officer asked in a low voice.

Cheng Yunchuan pushed up his glasses.

"I heard that he solved a serial murder case when he was in the provincial department, and also participated in cross-border drug enforcement."

"Tch, that was three years ago."

Deng Yunzhou didn't even look up.

"I'm more curious about why Captain Wan values ​​him so much."

Gao Xiaowei lowered his voice.

"I heard a rumor that Luo Fei is the mastermind behind the 'dredging operation'. He promoted both the former director and the current leader of Xiaohegou."

"real or fake?"

Several people exclaimed in surprise at the same time.

Chen Ziqiang snorted coldly.

"No matter who they are, in the second team they have to follow the rules of the second team."

Li Shangjun typed on the keyboard and said quietly.

"I heard that Captain Wan intends to have him replace Captain He."

"Shut up, everyone!"

He Liang suddenly stood up, his face grim.

"Have you finished all your cases? You're so free?"

The office fell silent instantly, and everyone lowered their heads, pretending to be busy.

He Liang glanced around and strode out.

Li Ya whispered after He Liang's footsteps faded into the distance.

"Captain He has been in a bad mood lately, please be understanding."

"It's all because of what happened last month."

Chen Ziqiang said indignantly.

"If it weren't for his misjudgment, Xiao Liu wouldn't have died, and Xiao Wang and Xiao Zhang wouldn't have been seriously injured and hospitalized!"

Li Shangjun nodded.

"I heard that there is an investigation at the higher-ups, and he may be dismissed."

"What's most infuriating is that instead of reflecting on his own actions, he blames his teammates for not cooperating well."

Li Ya sighed.

"Captain Wan is already very dissatisfied with him."

Cheng Yunchuan lowered his voice.

"I heard that Luo Fei was brought in by Captain Wan to replace Captain He."

"Stop guessing!"

Li Ya suddenly raised her voice.

"Just do your own thing!"

No one noticed that He Liang had clenched his fists outside the office door.

"Captain He!"

A young policeman came running up, panting.

"A headless female corpse has been found on the riverbank in Shaping District. Captain Wan requests your immediate attention!"

He Liang loosened his fist.

"understood."

Meanwhile, in the newly renovated office, Luo Fei and Chen Xuanran were unpacking the items they had just moved in.

Chen Xuanran wiped the sweat from his forehead and looked somewhat uneasily at the noisy corridor outside the door.

"Brother Luo, we're new here and we're already getting private offices. Won't we get ostracized?"

Luo Fei continued organizing the documents without looking up.

"Just do your job well and don't overthink it."

"Something seems to have happened outside, let's go check it out."

As soon as the two stepped out of the office, they saw the police officers rushing out, while only Li Shangjun, who was in charge of the network, was still sitting in front of the computer.

"Brother Li, what happened?"

Luo Fei asked.

Li Shangjun didn't even look up.

"A headless female corpse was found by the river, and everyone went to the scene."

Just then, Li Ya came running back.

"Captain Luo! Captain Wan wants you two to come to the scene as well. He sent the location to the group chat!"

After saying that, he left in a hurry.

Just as Luo Fei and Chen Xuanran were about to leave, Wan Qiang suddenly appeared at the door, waving a car key in his hand.

"That Mercedes in the ditch, your master had it delivered."

Wan Qiang tossed the key to Luo Fei.

"Just what I needed."

Luo Fei took the key.

"Thank you, Captain Wan!" Ten minutes later, Luo Fei drove the black Mercedes out of the police station garage.

Chen Xuanran sat in the passenger seat, tapping his knee repeatedly with his fingers.

"nervous?"

Luo Fei glanced at him.

"The first crime scene they encountered was a headless female corpse."

Chen Xuanran gave a wry smile.

"It was a bit too exciting."

Luo Fei didn't say anything, he just stepped on the gas.

The car sped through the city streets and soon arrived at the crime scene.

A cordon has been set up along the riverbank, and onlookers are being kept outside.

After Luo Fei showed his identification, he led Chen Xuanran through the crowd, and a gust of river wind carrying a fishy stench hit them.

"vomit."

Chen Xuanran suddenly covered his mouth, his face turning pale.

On the riverbank, inside an open suitcase, lay the curled-up body of a headless woman. Her skin was an unnatural bluish-white, and the severed neck had turned black. A forensic examiner was carefully examining the body.

"The time of death was approximately three days ago."

The forensic doctor said without looking up.

"Based on the water flow speed, the body should have been dumped in a county town several tens of kilometers upstream."

He Liang's face was gloomy.

"Has your identity been confirmed?"

"The fingerprints have been matched."

A technical officer ran over.

"It's Zhou Qin from the 'Night Fragrance' hair salon, 25 years old, with a prior conviction for prostitution."

Luo Fei squatted down and carefully examined the suitcase.

"This style of suitcase is very common, but..."

He put on gloves and gently flipped open the label on the box.

"Newly bought."

"Check her recent whereabouts."

He Liang gave the order.

Back at the police station, the surveillance team's findings made the case even more perplexing.

"Zhou Qin went to the mall before she went missing and bought this suitcase."

Li Shangjun pulled up the surveillance footage.

"Look, she's dragging her suitcase out of the mall and onto the street."

In the footage, a scantily clad young woman drags a brand-new suitcase out of the mall and disappears from the surveillance camera's view.

"The weird thing is."

Lee Sang-kyun switched screens.

“This road is a two-way street running east-west, with cameras at both ends, but there is a blind spot of about 50 meters in the middle. After Zhou Qin walked into the blind spot, she never appeared in any surveillance footage again.”

Luo Fei stared at the screen.

What's in the blind spot?

"We checked the sewers and the two shops, but found nothing unusual."

Cheng Yunchuan shook his head.

"She probably left by taxi or car."

Wan Qiang tapped on the table.

"The problem is that the road is in a busy downtown area, and more than a thousand vehicles pass through at the same time."

Silence fell over the meeting room. Exhaustion was etched on everyone's faces; the team was utterly worn out from working through the night on the case.

Wan Qiang spoke up.

"Emergency meeting. Taxi and ride-hailing services have been ruled out; it's confirmed Zhou Qin left in a private car. Finding the car owner is the breakthrough, but..."

"More than 1,800 private cars."

He Liang interrupted coldly.

"No matter how difficult it is, we must investigate."

Cheng Yunchuan had a headache.

"Captain He, we are really short-handed."

“If we abandon the vehicle inspection and start investigating Zhou Qin’s social connections, it will be more complicated.”

Wan Qiang sighed.

"She works at a KTV and comes into contact with all sorts of people."

The officers looked at each other, their faces showing difficulty.

Wan Qiang's gaze swept over everyone, finally landing on Luo Fei, who had remained silent in the corner.

Luo Fei was writing something in his notebook with his head down.

"Luo Fei, what are your thoughts?"

Wan Qiang asked.

Luo Fei looked up, closed his notebook, and spoke calmly.

"Actually, this is just a primary school math problem."

He Liang scoffed.

"Math problems? You think this is an Olympiad math competition?"

Luo Fei stood up, walked to the whiteboard, and picked up a marker.

"Although many vehicles passed by, only one car picked up Zhou Qin."

He drew a straight line on the whiteboard.

"The speed limit in this area is 40 km/h, and most vehicles travel at similar speeds."

He marked two points on this line.

“Zhou Qin was pulling a suitcase, and the murderer needed to open the trunk to put the suitcase in, which would take at least half a minute.”

He then drew a small circle between the two points.

"The road conditions have been clear the whole time, with no traffic jams. So..."

"So we only need to find out which car took the longest to travel this route."

Wan Qiang slapped his thigh hard, his eyes shining.

"Because we stopped halfway!"

Luo Fei nodded.

"Yes, the murderer stopped to pick up a passenger, which took half a minute to a minute longer than other vehicles."

The meeting room suddenly fell silent, and everyone stared at the whiteboard.

"Brilliant!"

Wan Qiang slammed his hand on the table, and even the ashtray jumped up.

"This method is fucking awesome!"

Chen Xuanran whispered a teasing remark in Luo Fei's ear.

"What happened to keeping a low profile?"

Luo Fei shrugged, a slight smile playing on his lips.

"They asked me."

Deng Yunzhou from the technical department immediately stood up.

"I'll go get the data right away and filter it according to this approach!"

Wan Qiang was beaming.

"Reward Luo Fei for solving the case!"

He turned to Luo Fei.

"You boy, you are so hidden!"

Luo Fei waved his hand.

"It's just a different perspective."

He Liang snorted coldly.

"Opportunistic and opportunistic."

In less than three hours, the technical department identified the suspect vehicle as a black Volkswagen, owned by Zhou Qin's next-door neighbor.

The criminal investigation team acted swiftly and arrested the suspect who was watching television at home.

Zhou Qin's fingerprints and bloodstains were retrieved from the car. Faced with the irrefutable evidence, the man quickly confessed to the murder and dismemberment process and the location where the head was buried.

The case was solved within six hours, breaking the Second Brigade's record for solving cases this year.

"Haha, look at the efficiency of our Second Battalion!"

Wan Qiang deliberately raised his voice in the cafeteria so that people in the next two teams could hear him.

"Six hours! Some teams can't solve a case in a month, but we can do it in half a day!"

Team leader Zhang Zhigao had a gloomy face, while team leader Xu Guangwu threw down his chopsticks and left.

Back in his office, Wan Qiang was still in high spirits.

"Luo Fei, you've done a great job today! Tonight it's my treat, a team dinner!"

Luo Fei declined.

"Captain, I have some things to do tonight."

"Okay, another day!"

Wan Qiang patted him on the shoulder, then turned to the others.

"Everyone, cheer up! Our Second Brigade must become the benchmark for the Municipal Bureau!"

He Liang stood by the window smoking, watching Luo Fei pack up and leave with a gloomy look in his eyes.

"Captain He doesn't seem to like you very much."

Chen Xuanran said quietly in the elevator.

Luo Fei smiled.

"That's normal; newcomers always have to go through trials."

"Your mathematical method is indeed impressive, but..."

Chen Xuanran hesitated for a moment.

"Captain He is a pragmatist, and he probably thinks it's too much of a shortcut."

"The method doesn't matter, as long as the case is solved."

Luo Fei pressed the elevator button.

"Anyway, I didn't plan to show off."

The two walked to the parking lot, and Chen Xuanran asked. (End of Chapter)