With Officer Mu's help, Qin Ming quickly obtained a temporary pass.

The laminated card has a photo and the consultant's title printed on it, and it's valid until today.

He took the ID and hung it around his neck, then put on a mask, hat, goggles, and other protective gear as required.

After making all the preparations, Qin Ming drove through the city and arrived at the scene.

This is a small house in the suburbs, with its own door and courtyard. The exterior walls of the house are covered with half-dead vines, and there are several neglected pomegranate trees in the yard, their branches leaning and casting dappled shadows on the ground in the slanting afternoon sunlight.

At this moment, a yellow cordon was set up around the small building, turning this once quiet land into an isolated island.

The building was already filled with police officers.

The forensic team members, wearing white coats, were squatting on the ground, sprinkling black powder onto the doorknob with a small brush;

Several members of the on-site survey team, carrying scales and cameras, repeatedly took photos of a certain area on the ground;

Several uniformed police officers were taking statements separately, quietly questioning the first witnesses and the person who reported the incident.

Investigation bags, evidence boxes, labels, tweezers, tape, powder containers—all sorts of tools were neatly arranged on the makeshift worktable, and a professional, orderly tension permeated the air.

Qin Ming stood at the door and took a deep breath.

He was slightly nervous and excited.

This wasn't the first time he had participated in a case. From helping Officer Mu find his cat to providing crucial information on several major cases, Consultant Qin's reputation, even with the limitations of time, had already begun to spread among insiders.

But only family members know their own affairs. In the past, what was called solving cases was actually done with the help of beast taming.

The honor was obtained, but the sense of participation was somewhat lacking.

But this time was different; this time he did it all himself! The level of participation was different, and the sense of accomplishment was different too!

Qin Ming became extremely focused, and the mental probing he hadn't been able to control in the morning gradually became easier.

The accuracy remains high, but he can actively choose what to "see" and what not to "see".

He filtered out all the buzzing flying insects, the woodlice crawling in the cracks of the wall, and the earthworms in the soil of the yard, leaving only the images relevant to the scene.

"Is that Consultant Qin?" Perhaps Qin Ming's pause had attracted attention, because Captain Wang came out of the inner room to greet him.

Team Leader Wang is in his early forties, with a square face and deep crow's feet around his eyes. He looks like the kind of person who doesn't talk much but is reliable in his work.

He was the highest-ranking person in charge at the scene.

After a few pleasantries, Captain Wang took the initiative to explain the situation: "Judging from the traces and valuables at the scene, burglary or robbery can be largely ruled out. There were no obvious pry marks on the doors and windows. Although the room had been ransacked, the way the drawers were opened and the location of the scattered items didn't seem like the work of an novice; rather, it seemed like a deliberate deception. The victim's phone and wallet were still there, and there was no sign that the jewelry box was missing. All things considered, it's highly likely that the crime was committed by someone known to the victim."

Qin Ming nodded. This analysis was flawless, with a solid foundation and sound logic.

But he didn't come here to hear a summary of this phase. He raised his head, his gaze passing over Captain Wang's shoulder, and looked at the forensic personnel who were busy in various corners.

"Are you all busy collecting trace evidence?" he asked.

"Yes." Captain Wang followed his gaze and glanced over. "The on-site investigation team is extracting fingerprints and biological traces from key locations. The first round of photographic fixation was completed before you came in, and now we are doing the second round of refined extraction."

Qin Ming had been waiting for these words. Without hesitation, he said, "Then I'll help too."

"This..." Captain Wang's expression changed, his lips moved, but the rest of the words got stuck in his throat.

This Captain Wang wasn't afraid of taking credit. To put it bluntly, Qin Ming was just an external consultant, completely outside their job hierarchy, so there was no question of him taking credit.

His real concern was something else entirely—on-site investigation and trace evidence examination are actually highly experience-intensive and specialized tasks.

The entry barrier for this line of work seems low; it seems like it just involves brushing powder with a brush and picking things up with tweezers.

But when it comes to the finer details, every step has its own intricacies.

For example, biological traces. Current technology is quite advanced. As long as skin flakes, hair, or sweat residue from other people that should not be present at the scene can be extracted, DNA comparison can be used to identify the suspect, which can be a decisive factor.

The problem is that any person's residence will leave behind a large number of biological traces—the victim's own, their family's, the cleaning staff's, and the relatives and friends who last visited.

This is such a large site, with thousands of locations where biological traces could have been left.

Which doorknob might have a stranger's fingerprints on it, which floor might have bloodstains that were hastily wiped away, which crack might have skin flakes and hair hidden in it—these are judgments that cannot be made without years of practical experience.

They cannot use exhaustive methods to obtain evidence.

Funding is limited, time is even tighter, and the channels for submitting physical evidence are only so wide. If all the evidence is submitted, it will take forever to get the results.

Therefore, it is essential for the on-site investigators to make choices based on their experience, prioritizing the most crucial physical evidence for testing. This kind of decision-making is not something that laymen can do.

Moreover, if the technique is improper and contamination is left behind, it will increase the difficulty of the next few steps.

Therefore, in such crucial moments, novices are truly allowed to interfere.

Team Leader Wang didn't want to let Qin Ming handle those key positions, not because he looked down on him, but because that's the rule.

Qin Ming understood the unspoken meaning behind the other party's words and smiled, saying, "I'll just observe; I won't interfere directly."

Team Leader Wang breathed a sigh of relief behind his mask. That promise was enough, as long as he didn't touch the equipment or physical evidence.

He can go wherever he wants and look wherever he wants, as long as he doesn't have arms.

Qin Ming didn't wander around. He glanced at the layout of the room and went straight to an old forensic doctor and another on-site investigator.

Qin Ming went straight to an elderly forensic doctor and the on-site investigator. They were accompanied by a young man, and they would occasionally exchange a few words, for example:

"Xiao Qu, let me test you. What is the correct procedure and technique for collecting blood evidence?"

The old forensic doctor asked without looking up, his tweezers steadily picking up a tiny, dark-colored particle and placing it into an evidence bag to seal it.

Xiao Qu's face twisted slightly. He steadied himself, recited the standard procedure from beginning to end, and then, under the watchful eye of the old forensic doctor, demonstrated the operating gestures using a set of clean instruments.

"Not bad, didn't return it to the teacher." The old forensic doctor snorted, it was hard to tell whether it was praise or criticism.

Not two seconds later, the inspector sitting next to him also became interested, pointing to two floor tiles that had been marked with numbers: "Xiao Qu, look at these two spots on the ground, there's dandruff and hair on them. Which one do you think should be treated first?"

Xiao Qu, who had just straightened up, looked stiff, and her back quietly hunched over a little more.

He stared at the two spots on the ground, his gaze darting back and forth between the two tiles that looked almost identical, and beads of sweat began to appear on his forehead.

Dandruff is dandruff wherever it is, and hair is hair wherever it is; to the naked eye, there is no difference between them.

Seeing that he couldn't answer, Qin Ming's eyes lit up.

He knows how to do this.

Although he wasn't formally trained and hadn't studied systematic trace evidence theory, he could see it!

Qin Ming's gaze fell on the tile next to the old forensic doctor's left foot. He silently focused his mental energy, magnifying every hair on the ground to the fiber level.

The thickness of the hair shaft, the shape of its cross-section, the arrangement of the cuticles on its surface, and the degree of wear at the tip. Among all hairs, there is one that is most special.

"Master, the third hair on the tile next to your left foot needs to be dealt with first," Qin Ming quickly replied.

The sound wasn't loud, but the effect was amazing.

The old forensic doctor stopped, the on-site investigator turned around, and Xiao Qu turned her whole body around.

Three pairs of eyes turned to Qin Ming simultaneously, their expressions perfectly synchronized.

Their question, "Which area of ​​the ground should be treated first?", is supported by other evidence.

But what's with this person specifying which single hair?

Sharp eyes and keen perception?

Qin Ming met three incredulous gazes and belatedly realized that he had been too specific.

He quickly tried to find the missing piece, saying, "The book says that different hairs have different cross-sections. Some are triangular, and some are oval."

He pointed to the hair near the old forensic doctor's feet, speaking casually as if stating a common-sense fact, "And if you look closely at this one, its softness, firmness, and curl are slightly different from the other hairs."

After he finished speaking, he waited for everyone to nod in approval.

But as they listened, everyone's eyes became even more blank.

The old forensic doctor glanced at Qin Ming, then looked down at the ground, then looked up at Qin Ming again, his lips moving slightly.

He wanted to tell the young consultant that the book did indeed contain information about the cross-section of hair, but that information was for comparing known and unknown samples under a microscope, not for looking at tiles with the naked eye.

The resolution of the human eye is limited. Even young people with the best eyesight can only distinguish the outlines of objects at the sub-millimeter level under normal lighting conditions. The diameter of a hair is usually between 0.05 and 0.12 millimeters, which is almost an order of magnitude beyond the resolution limit of the human eye.

Xiao Qu stared wide-eyed, relying on her 5.0 vision after lens correction, but she couldn't see any difference in color or curvature.

Absolutely perfect sense of color? Terrifying! Xiao Qu mentally labeled Qin Ming.

The veteran forensic doctor didn't rush to offer his opinion. He had spent most of his life as a forensic doctor, seen all sorts of strange things, and knew that some people's eyes were indeed like they had superpowers.

For example, he used to know a senior jewelry appraiser who could detect with the naked eye inferior diamonds mixed in by other companies, even diamonds of very similar material.

While Qin Ming's vision is rare, it's not entirely inexplicable.

And more importantly, Qin Ming does have the status of "advisor".

For someone to be so confident on his first day at the site, pointing to a single hair and saying "this one is wrong," means either he's absolutely certain, or he's risking his professional reputation.

Someone who already has multiple success stories is unlikely to do the latter.

So the old forensic doctor didn't say much, and didn't even ask his apprentice Xiao Qu to help.

He pulled a new pair of gloves from the evidence box, then took out a brand-new pair of tweezers and a special paper evidence bag from the sterile evidence collection box. He personally knelt down, carefully clipped the hair into the bag, put it in, and sealed it.

Then they wrote a line of text on the label and attached a label in a special color.

Since Consultant Qin dared to make such a confident promise, he would give this person some special treatment, such as access to the VIP priority review channel.

As soon as tonight or as late as tomorrow morning, a DNA comparison report will be on the task force's desk.

He also wanted to use this opportunity to see how capable this Consultant Qin was.

He glanced at Qin Ming through his goggles, and Qin Ming met the old forensic doctor's gaze and nodded slightly.

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