Chapter 179: Suspect List

When Huang Qiangmin came to the forensic office, his head still hadn't quite turned around.

He had let Jiang Yuan do cold cases, but the general process of doing cold cases really wasn't like this.

To be realistic, if the provincial department were now holding a "Hundred-Day Cold Case Attack Action" or something, by the time the action ended, some cold cases that had been prepared in advance wouldn't even have been started.

The criminal suspects wouldn't cooperate with your police action.

And once a current case becomes a cold case, there are always some difficulties that exist.

Even if there weren't, once it becomes a cold case, there should be.

Therefore, there are almost none that can pick up leaks from cold cases.

Criminal police officers doing cold cases are all complaining bitterly. In some places, being assigned to do cold case clearing is as painful as being treated unfairly.

In fact, it is indeed very painful.

It's like a salesperson encountering a customer they can't handle no matter what they try. At this time, can changing to another salesperson handle it? Most likely not—this refers to regular sales.

Huang Qiangmin did indeed value Jiang Yuan's ability, but Jiang Yuan having movement after just half a day of being back was something Huang Qiangmin still didn't quite understand.

When big livestock open up wasteland, it usually takes a few months. Don't you have to waste some feed, waste some labor, and toss about for a while before you can have results?

Isn't it normal to spend three to five months starting a cold case murder?

If it were easily settled in a few hours, were they crazy to leave it as a cold case?

It's not a steak that can be aged.

"What clues did you find?" Huang Qiangmin entered the room with a serious face. Although he was indeed very curious, the dignity of a brigade captain had to be guaranteed.

If a leader has no dignity, how can they manage their subordinates?

"Jiang Yuan found it; let him tell you." Wu Jun didn't claim the credit. He didn't need to consider the dignity issue; he had already resolved his deputy section-level treatment and had no desires before retirement.

While waiting for people, Jiang Yuan had long since prepared the pictures and made them directly into a PPT. At this time, he turned the screen and said, "It's the 611 He Jingqin case from thirteen years ago..."

"Oh, I remember, the scene was full of blood."

"Right, I did a scene reconstruction based on the bloodstains." Jiang Yuan operated the PPT with his left hand and gestured slightly with his right.

Wu Jun was smiling on the opposite side, and upon hearing this, he was surprised: "When did you do the scene reconstruction?"

"I did it while making the PPT," Jiang Yuan replied.

Bloodstain analysis is a high-end thing; to play with it, you have to be at the LV3 level.

However, for Jiang Yuan, who has mastered LV5 bloodstain analysis, reconstructing the scene is very basic.

The pictures that needed to be seen were all seen, and the materials needed were all there; it was just a process of integrated analysis.

Jiang Yuan didn't talk nonsense either, first brushing out a few photos, and then saying, "I won't elaborate on the crime scene investigation and the autopsy report one by one; I'll directly talk about the reconstruction of the criminal process."

"From the bloodstain analysis, the murderer's criminal process is divided into 4 parts."

"Part one: The murderer held the victim hostage, starting from the fire door position, and inflicted the first injury on the victim with a knife. The victim had superficial scratches on her arm, likely having carried out low-intensity defense here. The bloodstains left on the wall behind the door might have been caused by pushing and shoving. The main basis is: A, bloodstains formed by the victim's jacket flowing from top to bottom. B..."

"Part two: The murderer held the victim hostage to the rooftop. The victim likely understood the murderer's purpose, followed by relatively intense resistance, possibly accompanied by shouting. The murderer held the knife in his right hand, from left to right, and made a fatal wound; the wound was on the victim's neck, thereby forming spray-like bloodstains... Next, the murderer dragged the victim into the rooftop, forming dragging injuries and a certain degree of resistance... The main basis..."

"Part three: The murderer stabbed the victim again at the rooftop position, leading to the victim's death. The main basis: A, flowing bloodstains... B, the formation of a pool of blood... C, the victim's footprints... D, after the victim fell, spray-like bloodstains appeared again..."

"Part four: The murderer began to wipe and clean the crime scene. It was mainly to clean up the large pool of blood on the ground and close the rooftop door. I think this was to cover up the crime scene and avoid being discovered too early. From this, it is inferred that after the murderer committed the crime, the first consideration was to run away and leave. The main basis is..."

Huang Qiangmin was dumbfounded.

He was a county criminal police brigade captain.

This kind of scene reconstruction, looking at photos as if seeing it with his own eyes and describing the criminal's behavior, was something he had only seen performed before.

"Where did you learn this..." Huang Qiangmin really couldn't understand.

Jiang Yuan was silent for two seconds and said, "When I was studying, I quite liked to ponder these things."

"Then you really pondered something out." Huang Qiangmin didn't know what to say. It was like leading a cow out to work, and as a result, the cow did the work of an entire production team. So, as the captain of the production team, what should he do now?

Jiang Yuan said, "I read the previous case files, mainly looking for the murderer from the victim's family background. I think changing a perspective of investigation might have a chance to solve the case..."

"An ex-convict who ran away after committing the crime? This scope is also very large." Huang Qiangmin instinctively looked for loopholes.

The cold case murder has been started, and in the blink of an eye, several police officers might have to be invested in it, and it's always a few months of investigation time; the preliminary demonstration cannot be less.

Jiang Yuan then said the body shape judgment made through footprints earlier, and then said, "I think we can narrow the scope first; if it doesn't work, then expand the consideration."

"How to narrow it?"

"I think we can assume the murderer has a prior record of sex crimes, and the time since release is very short, for example, one or two months, not exceeding three months. Then, he ran away very quickly; it should have been that day he left, at most not exceeding the next day."

"Why is the time since release very short?" Huang Qiangmin felt this question was the most important.

There are only so many prisons in the province, plus the criminals from Ningtai County, the number of sex offenders released from prison within three months before the crime should be very small. If not handled well, it's just a few people.

Among such a small number of people, finding someone between 25 and 30 years old, the number is even smaller.

After deliberating on his language, Jiang Yuan turned off the PPT, found a few more photos, and said, "From my understanding of the crime scene, the murderer's cleaning behavior is relatively calm. But his movements, I think, have some urgency, and a bit of unfamiliarity. That is... he is very bold, very confident in the process of committing the crime, but also relatively anxious..."

What Jiang Yuan described at this time was already an overall judgment, not a separate point-to-point judgment: "I think this time, it was the murderer's first crime after being released from prison, so he appeared exceptionally... impatient."

Huang Qiangmin understood. Although he himself didn't quite understand bloodstain analysis, since Jiang Yuan had analyzed it to this extent, Huang Qiangmin could only choose to believe it.

"You guys investigate first. See how far you need to go. I'll find two people for you." Huang Qiangmin thought for a while and called Wei Zhengguo over.

For this case, if Jiang Yuan had found fingerprint or DNA evidence, Huang Qiangmin would definitely have pulled up a special task force directly.

But for bloodstain analysis, Huang Qiangmin wanted to send two scouts out first.

This was also a general operation in the criminal police team; it could only be said that Jiang Yuan was not given special treatment.

This was what Jiang Yuan wanted. Once Wei Zhengguo came over, the two discussed it and started making phone calls.

Prisons are managed by the judicial system, and prisons outside the province are especially troublesome.

It was just that this trouble didn't last long.

Two days later.

A list of only 8 people was placed on Huang Qiangmin's desk.

"Only these few suspects?" At this, Huang Qiangmin's level of importance was instantly raised.

Jiang Yuan nodded and said, "Of this list, I think the first 4 are the most likely. The last four could have been screened out first to wait and see. But Captain Wei thinks there's no need to limit the scope so narrowly..."

"Old Wei is right. Wait for me to call people over." Huang Qiangmin didn't even approve the documents at hand and directly called the internal staff to call people.

While waiting for people, Huang Qiangmin said, "For a cold case murder suspect list, what's 8 people? 80 people can be directly screened. For this kind of case, there's no fear of alerting the enemy; with 8 people, we'll equip enough manpower..."

"Yes." Jiang Yuan had also experienced several interrogations and arrests and knew what the situation was like.

Police handling cases isn't playing a game; they wouldn't say they'd get everything ready and screen out the only result.

Four squadron leaders and deputy leaders were called over in one breath and went directly to the conference room.

"Jiang Yuan, you'll brief everyone on the case in a moment." Huang Qiangmin said and got up to go to the conference room.

Jiang Yuan was also prepared.

Regardless of whether they were arresting 8 people or 4 people, the specific situation of the case had to be told to the executing police officers. Arrests always carried a certain degree of danger, and necessary information needed to be told.

Jiang Yuan arrived at the conference room, released the PPT again, operated with one hand while reconstructing the crime scene more completely.

Compared to the time he explained it to Brigade Captain Huang Qiangmin, Jiang Yuan was better prepared this time, and the narration was more complete.

Several captains and deputy captains were also old criminal police officers, but after listening to Jiang Yuan's case report, they couldn't speak for a long time.

"Will all future cases have to be done like this?" After a long time, Comrade Wu Junhao of the First Squadron couldn't help but speak.

"Of course that's impossible." Liu Wenkai, captain of the Second Squadron, sighed and said, "No matter how well a commercial KTV does, it won't steal the market of the red-light district, don't worry."

Everyone agreed inexplicably and felt a trace of peace of mind. ===== CHAPTER 180 =====