Conference Room One.
After an all-nighter, everyone is still busy.
When a murder occurs, taking a nap on a chair is a luxury for police officers working on the case.
Of course, at this time, not only the detectives of the Criminal Investigation Team are busy, but also the grassroots police stations.
Since yesterday morning, everyone closely related to the deceased has to be screened.
It's impossible for the detectives alone to complete this quickly.
The grassroots police stations also need to send people to follow up, and they even need to investigate some less important people.
Now, it has been twenty-one hours since Wang Lin's body was discovered.
The forensic report has also been completed.
The precise time of death is estimated to be between midnight 2 to 3 AM four days ago.
There was no sign of assault before death, but there were post-mortem bruise marks on the breasts and private parts.
This point has attracted the special task force's great attention.
Desecrating the corpse after death suggests a possibility of revenge killing.
However, according to detailed observations, the bruise marks have net-like spots, indicating that the perpetrator applied force over clothing.
Therefore, no fingerprints were found on the victim's body.
Crime Scene Investigation Office.
"Master, the analysis of the three sets of footprints is complete, and the owners' body characteristics have been roughly identified."
Lu Chuan handed the final footprint analysis report to the dark-eyed Liu Guodong and lit a cigarette.
Despite being in his early twenties, Lu Chuan felt a bit tired after staying up all night.
"Male, approximately 1.73 meters tall, weighing around seventy kilograms, with an age initially judged to be between twenty-eight and thirty-three."
"The person's work likely involves long-standing time, as the foot bone gaps are slightly larger than normal."
"A chef?"
Yang Sen dropped a couple of eye drops into his eyes and joined in.
Lu Chuan shook his head: "Not necessarily, it could also be a DJ or something. The specific situation is uncertain."
"Master, how's the fingerprint match?"
Upon hearing this, Liu Guodong's expression turned somewhat serious: "We only successfully matched twelve out of seventy-two fingerprint sets."
This matching probability...
Is indeed low.
Not only because the collected fingerprints overlap, but also because the handle of the electric bike is cylindrical.
Even with individual fingerprints, the ones left on a cylindrical surface are severely distorted.
Fortunately, the handle has a smooth rubber cover, and the ridges have been worn down. Otherwise, fingerprint collection would not have been possible.
Even so, fingerprints must be preprocessed for a successful match, which is exceedingly difficult.
Lu Chuan, who studied Crime Scene Investigation, is well aware that collecting fingerprints from cylindrical and irregular objects, and completing analysis and comparison, requires exceptional skill.
"How are the results?"
"Hehe, the interesting part is these results."
Old Bai also got up from the sofa and took the cigarette Lu Chuan handed over: "All twelve sets of fingerprints belong to the vehicle owner, Wang Song."
Huh?
"All twelve sets of fingerprints are his?"
This seems unlikely.
"Wang Song reported his electric bike stolen. The topmost prints are probably from the thief."
"Of course, that thief could be the one who murdered Wang Lin."
"Why are all twelve sets of fingerprints Wang Song's...?"
Lu Chuan was slightly stunned, then suddenly realized: "Wang Song... filed a false report?"
The analysis results from the Crime Scene Investigation Office were quickly handed over to Qin Yong.
Bam!
Qin Yong, who had also stayed up all night, looked at the analysis report from the Crime Scene Investigation Office, his eyes gleaming.
"Immediately arrest Wang Song!"
Fingerprints are one aspect; the key is the footprint analysis result Lu Chuan provided.
The physical characteristics of the shoe prints on the electric bike's pedal match Wang Song's body type.
With the fingerprint comparison results from the Crime Scene Investigation and the footprint analysis identifying the suspect's characteristics,
Wang Song quickly confessed to killing Wang Lin.
And Wang Song's motive for the crime astonished the interrogating detectives.
Wang Lin and Wang Song were actually strangers.
The only intersection in their lives was a chat app.
"I didn't actually intend to kill her." In the interrogation room, Wang Song was already handcuffed, slumped in the interrogation chair.
"We had already agreed on a price, but she raised it last minute, threatening to tell my wife if I didn't agree..."
"I... *sob*... I really didn't mean to do it..."
With snot and tears, Wang Song confessed the details of their meeting.
Apart from being a lead dancer at a slow-rocking club, Wang Lin also had other part-time jobs.
Many men with such needs were on the chat app.
Four days ago, they agreed on a price of five hundred yuan.
Their meeting place was to be Wang Song's restaurant.
However, upon meeting, Wang Lin demanded the price be increased to a thousand yuan, claiming Wang Song was too ugly.
She also threatened Wang Song, saying she'd cause a scene at his restaurant and tell his wife about his infidelity if he didn't agree.
In a moment of panic, in the restaurant, Wang Song strangled Wang Lin.
"And what about the bruise marks on Wang Lin's breast and genital area?"
This was found during the forensic examination.
"Well... After I strangled her, I was thinking... I was thinking of... having some 'fun'..."
"But... I was afraid of leaving evidence, so I, over her clothes... over her clothes..."
Wang Lin's phone, identity documents, and backpack were found in the back kitchen of Wang Song's restaurant.
As for the stolen electric bike, it was a charade directed by Wang Song.
That night, after riding the electric bike out, he returned to the restaurant.
And the stolen bike seen on the traffic surveillance footage was deliberately staged by Wang Song.
He has lived on North Lake Road for over twenty years and is familiar with where there are and aren't any surveillance cameras.
He then returned to the restaurant through an unsupervised alley, took Wang Lin, and dumped the body at Happy Reservoir.
"Ding!"
"Advanced mission accomplished: The host collected critical fingerprint information from the crime electric bike using self-made fingerprint developer, helping the action team narrow down the suspect range, cracking the Happy Reservoir body dumping case."
"System reward: Intermediate Skeleton Identification Analysis Skill Card."
"Does the host wish to claim the reward?"
Intermediate Skeleton Identification Analysis Skill?
Lu Chuan was slightly stunned.
This time, the system's reward is somewhat peculiar.
Skeletons are not commonly encountered cases.
But when encountered, they're likely homicides from long-term missing cases.
Of course, there could be accidental deaths causing disappearances, but this probability is relatively low.
Though it's odd that the system rewards this skill, at least it's an intermediate skill card.
Having experienced the Intermediate Fingerprint Collection Skills card, Lu Chuan knows this is already at an expert level.
Compared to what Lu Chuan knows, this capability should be possessed by top experts from the provincial office.
"Claim!"
Whoosh!
Streams of information coursed through Lu Chuan's consciousness.
Knowledge regarding human skeletal structures poured in.