National Forensic Doctor
Chapter 661 - 605: Just Gutter Oil

Chapter 661: Chapter 605: Just Gutter Oil

Information about the members of the two tour groups, one large, one small, was delivered, and Jiang Yuan and the members of the Cold Case Squad carefully distinguished among them.

Discussing probabilities, the likelihood that people from the two tour groups chose to commit murder was extremely low. It was even less likely that they colluded with the victim’s ex-boyfriend, so, if a murder did occur, it would be a purely random act.

However, one had to admit that such low-probability events could indeed happen.

Jiang Yuan’s most dangerous crime scene investigation involved a case where the killer had joined a tour group and committed murders nationwide, also showing a penchant for returning to the crime scene. Jiang Yuan had almost become a prop for the criminal’s escalation. It was genuinely not for money, power, fame or profit, but purely for the thrill of killing, a purely antisocial personality, the so-called serial killer type.

Media reports of similar incidents can indeed be found, like a 10-year-old girl who, upon encountering a young child in an elevator, did not choose to help them home but instead inexplicably began to beat them, continuing until reaching the 25th floor, before throwing them down. There was also the 13-year-old who dismembered a classmate...

Random killings are inherently difficult to solve, and while a regular police team might not even consider this possibility, Jiang Yuan’s Accumulated Case Team had to.

Previous unsolved cases had contained such elements, which could not simply be dismissed as urban legends.

There were many ways of distinguishing, mainly questioning, taking fingerprints and footprints, along with collecting alibis.

These findings might not need to conclude immediately, but as long as they can provide effective evidence for later review, that was sufficient.

Just as the credibility of evidence in a research paper is questioned, so too is the strength of evidence. For example, an ordinary alibi such as sleeping with one’s wife at night is weaker because the wife might have a strong motive to lie for her husband. An alibi involving sleeping with a mistress is slightly stronger. If the alibi is sleeping with a time-based love experience provider at night, then the evidence strength becomes very strong.

Consequently, the two tour groups were detained in Ningtai County.

Over thirty people gradually became irritable.

Fortunately, by the next afternoon, Jiang Yuan had completed the screening of these tourists from different places, and the station had waived a day’s room charge, allowing a smooth send-off.

"The probability of a random killing is relatively low," Jiang Yuan judged for himself.

Detective work is actually a job with a heavy reliance on experience. In the first half of one’s life, the experiences one accumulates are on par with those from detective work.

Therefore, so-called ’super detectives’ are not trained but emerge on their own.

Ordinary police can become a bit more formidable by handling cases one after another.

That is how Jiang Yuan now is.

Many criminals think they have come up with a master stroke, but most of these tricks have been thought of before. So, often, when police encounter similar situations, they can react promptly.

It’s somewhat like doing practice problems.

Strange and unseen questions can indeed seem difficult and different at first encounter, but with more exposure, the solutions become clearer.

In cases like the current one, the most mysterious pattern would be the random killing pattern.

Having ruled this out, there wasn’t much else that worried Jiang Yuan.

In the afternoon.

Liu Wenkai returned as expected, a look of joy on his face:

"The restaurant owner has a problem."

Jiang Yuan and the others immediately returned to the table.

The explanation that the owner killed the waitress was much more readily understood.

Things that are easy to understand are usually more likely to occur, and police like it that way.

"The boss has two cellphones, and the other phone also had the victim’s WeChat on it. The record was deleted, but after we restored it, it seems they were sleeping together," Liu Wenkai went straight to the most explosive part, adding, "It looks like this has been going on for several years, and the woman now likely wants to break off the relationship."

"This could be seen as a motive," everyone in the special case team suddenly brightened up.

"Very likely. The boss probably took advantage of the girl when she was young, using their shared hometown and the difference in status to deceive her. Now, when the girl wants to break up with him and have a proper boyfriend, he doesn’t want to let go," Liu Wenkai made a quite plausible inference.

"If he doesn’t want to let go, there’s even less reason for him to have killed her," Wang Chuanxing retorted.

Liu Wenkai glanced at him and said soothingly, "It’s not surprising to see a scenario where if someone can’t have it, they destroy it. Moreover, this boss has been in a special situation recently, which should be understandable."

"What special situation?" Wang Chuanxing didn’t catch on for a moment.

"The restaurant he’s painstakingly run for so long is about to be transferred, and he will have to go to prison afterward. In other words, Mijia was already destined to slip out of his grasp. Without the intervention of a mentally ill boyfriend, by the time this boss’s case goes to trial and he gets out of prison, Mijia could be anywhere," Liu Wenkai actually wanted to express this point and took the opportunity to bring it up in response to Wang Chuanxing’s inquiry.

Wang Chuanxing hissed, as though feeling the pressure that the veteran chief detective was exerting.

Jiang Yuan remained unmoved and said, "The punishment for committing a crime is not a reason for him to commit another. If he doesn’t want to live, then so be it. Let’s bring him in for interrogation."

"Eh, interrogate him directly?" Liu Wenkai had his own rhythm and said, "I still want to understand more from the side. We don’t have anything solid in our hands right now; I’m afraid we might not get much out of an interrogation."

"Nothing else can be found at the scene, and from the side... this boss is about to go to prison, he is definitely handling his affairs, so the chances of him slipping up again are slim, let’s interrogate him directly. The victim was underage when she started seeing him, and they come from the same hometown; this point alone is sufficient. Looking at the crime scene’s footprints and other elements, the likelihood of him being the perpetrator is very high," Jiang Yuan made the decision.

In Jiang Yuan’s view, the caution exercised by Liu Wenkai differed starkly from his own.

From Jiang Yuan’s perspective, the primary issue was the absence of direct evidence pointing to the boss. The evidence was abundant, but since the crime scene was his own restaurant, finding DNA, footprints, and fingerprints there was to be expected.

Since the victim had a relationship with the boss, even if there was physical evidence, it would be explainable.

Liu Wenkai, however, wasn’t worried about these factors. He had handled many more cases where the evidence wasn’t even up to this standard. But he was more concerned that the boss might be prepared, so he wanted to gather some evidence from those around him to create a breakthrough for interrogation.

It wasn’t a matter of right or wrong, just that Liu Wenkai’s work style differed from Jiang Yuan’s, and the resources available to Liu Wenkai, including past experience in handling cases, were also different from Jiang Yuan’s.

Jiang Yuan had now recognized this and decisively decided to move the case forward.

Liu Wenkai hesitated for a moment but then followed suit.

They went to the boss’s home, and in less than three hours, they had brought him back.

Once Meng Chengbiao was placed in the interrogation room, the tense standoff ensued.

Meng Chengbiao had little in the way of possessions, almost none, which was his greatest source of anxiety.

As for the restaurant owner – he was mainly afraid of dying.

The two men sat face to face in the interrogation room, as though locked in confrontation.

Meng Chengbiao’s gaze grew increasingly resolute and cold.

The restaurant owner suddenly gave a wretched smile, "Just tell me what charges you want to pin on me, I’m ready to go to prison."

In his tone were mixes of bravery and fear, desire and despair.

Seeing this, Meng Chengbiao didn’t follow the script and instead delivered a blunt statement, "The charge is murder, and we will be seeking the death penalty."

The restaurant owner was immediately stunned: "Just for using gutter oil..."