Since the crime occurred, the crime scene investigation office has been the part Qin Yong has been most concerned about.

Although the burnt vehicle wreckage cannot be examined now, Lu Chuan discovered some footprints and tire tracks at the scene, which Qin Yong is very interested in.

Throughout the night, Qin Yong had the urge to go upstairs and check the crime scene investigation office several times.

But he restrained himself.

He knew that the team at the scene must be busy conducting analyses, and him going there would only waste time without offering any help.

It could even add pressure to the crime scene investigation, potentially causing mistakes, which would be a loss.

He glanced at the quartz clock on the wall, it was 9:58.

The pace wasn't slow.

Liu Guodong walked quickly to the head of the conference table, handing the Footprint Identification and Analysis report in his hand to Qin Yong: "There are two sets of strange footprints found at the scene, excluding ours."

"This is the analysis report done by Lu."

Lu Chuan!

Again, it's Lu Chuan.

Qin Yong let out a long sigh.

In the past, the Haizhou City Criminal Investigation Team couldn't conduct footprint analyses themselves.

Apart from some basic information like gender and height, they couldn't manage the rest.

Moreover, even this information couldn't be said to have a high accuracy rate.

Previously, they either had to request help from the provincial department's technical identification center or seek assistance from the neighboring Criminal Investigation Team.

But, there really are few experts in this field.

Although the trace inspection over at the Tianzhou City Criminal Investigation Team is somewhat stronger than Liu Guodong's, the improvement is limited.

As for the provincial department...

You've got homicides, others have homicides too.

Other than queuing, there's no alternative.

Not like using your own people, such convenience.

Slightly excited and moved, Qin Yong took the analysis report with a slight pause in expression: "A man and a woman?"

The result of the first report: Male, height of 1.76 meters, weight around 70 kilograms, age between 32 to 37, walking posture slightly pigeon-toed outward.

The result of the second report: Female, height of 1.65 meters, weight around 50 kilograms, age between 25 to 30, highly likely trained in posture, heavy on the heels, frequently wearing high heels for a long time.

Two reports, one male and one female.

Intentional murder, and with two people committing the crime, this situation is very rare.

Killing isn't like playing cards, something one person can't accomplish alone.

Two people committing murder, especially planned premeditated murder, is quite rare.

In the murder cases Qin Yong has dealt with, group crimes mostly occur in crimes of passion.

For instance, fights and brawls, where multiple individuals die due to mutual beating.

The premeditated multi-person crime is exceedingly rare.

Moreover, a man and a woman committing the crime together is even rarer.

"How accurate are these two reports?"

Naturally, Qin Yong asked the same question that Liu Guodong just raised in the crime scene investigation lab.

"The accuracy of the male footprint analysis report is 90%, while the female suspect's footprint analysis report is 70%."

Ninety percent?

Seventy percent!

This accuracy isn't low.

With this scope of a man and a woman, Ren Qiang and his team's investigation will be more targeted.

Moreover, judging by the age, if they were avenging Song Kun, then these two or one of them might have been recently caught by Song Kun.

Of course, it can't be ruled out that it was committed by a child of some criminal, but this possibility is very small.

It's virtually negligible.

In the crime scene investigation lab, Lu Chuan and Old Bai lit cigarettes and were taking a break.

After working half the night, Lu Chuan felt a bit dizzy and blurry-eyed.

There's no need to visit the traffic police team anymore since the vehicle involved has been found, analyzing the wheel traces at the crime scene is no longer necessary.

Now, what Lu Chuan needs to do is perform identification analysis on the tire tracks discovered on the road of the abandoned vehicle ditch.

The offending vehicle, a Ford Everest, has been confirmed to be stolen by the culprit.

But their getaway vehicle may not be the same.

"Brother Bai, who's following up on the vehicle theft?"

"Sun Jun, I think, with one team watching, but I haven't heard of any progress."

Old Bai took the last puff of his cigarette, exhaling a big smoke ring: "The other side came prepared, stealing a car to stage an accident and then burning the car to destroy evidence, not something an ordinary person can do."

Yang Sen nodded in agreement: "These two's methods have a hint of professional personnel."

No matter the industry, professionals and amateurs really have a difference in how they do things.

Not to mention the skills, they don't even understand the professional terms.

Things like 'ants climbing a tree,' 'an old tree with coiled roots,' 'pillar supporting the sky,' non-professionals just don't get the meanings.

Lu Chuan stubbed out the cigarette butt and handed Yang Sen another Chunghwa: "Brother Yang, do you mean... hitmen?"

In this age, are there still hitmen in Haizhou City?

In this current environment, this profession is as rare as Dongguan-style services.

"It might not necessarily be professional hitmen, here on our side, hitmen are rare; it can only be assumed they probably have more than one life on their hands..."

The work can't stop.

The three chatted for a while before returning to work.

Of course, Lu Chuan remained the main force, Yang Sen and Old Bai couldn't help much at this point.

Four sets of tire tracks were collected by Lu Chuan on the winding road toward the ditch.

With some overlapping tire impressions, processing the tire track images had to be done before any analysis.

Measuring tire width, comparing data on edge tire impressions, analyzing the aspect ratio, measuring tread wear depth, estimating tire usage years, etc.

Unlike the tire tracks that can be collected at the crash site.

Tire tracks on ordinary roads don't have rubber residues.

Or to say, the residues are very little, making it hard to analyze tire composition.

But based on tread patterns, the type of the tire can be determined.

Also, based on tread spacing, the vehicle's speed at that time can be gauged.

This relates to tire elasticity, where the size of a stationary tire differs from a moving one.

Due to elasticity and inertia, moving tires are broader than stationary ones.

Moreover, the faster the vehicle, the greater the disparity.

Utilizing this gap, and applying formulas, one can largely estimate the vehicle's speed.

Of course, this estimation's accuracy isn't high because tire deformation is also influenced by temperature.

Different road surface materials also impact it.

So, only a reference range can be estimated.

Basic tire track identification skills can still analyze limited data.

It took Lu Chuan over two hours just to separate the overlapping tracks from the four sets of tires.

With a case as serious as this, no one in the entire Criminal Investigation Team is idle.

Even those usually engaged in public relations are now extremely busy, constantly monitoring online public opinion to prevent uncontrollable situations from arising.

Even the union elites who usually do singing and dancing have not left work yet.

They are preparing consolation packages for frontline visits tomorrow, and they need to take photos for record too.

However, the forensic doctors have it slightly easier over there.

Song Kun's cause of death is determined, and with the family's consent, no autopsy was performed.

An autopsy, in fact, is not what the average person imagines.

It's not that an autopsy has to be done every time a homicide occurs.

Only when the cause of death is unclear, or the time of death is uncertain, with family consent, is an autopsy conducted.

Of course, unidentified corpses without family are certainly autopsied.

By the latter half of the night, at 3:30, the four sets of tire track analysis were finally completed.

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