The Forensic Doctor Better Than a Detective-Chapter 555 - 314: The Culprit Is Someone Familiar!
Jiang An pondered for a moment, his gaze never leaving the linear mark.
"I think this mark is very likely caused by the weapon."
"Both victims have multiple sharp force injuries, and these wounds must have been caused by some kind of sharp weapon."
"If the weapon was covered in blood during the attack, and accidentally touched the edge of the sofa, it might leave such a transfer mark."
Hearing this, Wan nodded thoughtfully, "You’re right!"
"This mark indeed doesn’t match the characteristics of a normal bloodstain."
"But..." He paused for a moment, "Even if this mark was left by the weapon, what does it prove?"
Jiang An didn’t answer immediately, frowning slightly, clearly sorting through all possibilities in his mind.
At this crime scene full of doubts, the multiple wounds on the two victims indicate that the murderer used a sharp weapon.
And bloodstain analysis is undoubtedly the key breakthrough point in solving the case.
Jiang An firmly believes that in a crime scene, people can lie, traces can be fabricated, but bloodstains — especially these subtle accidental blood traces — are often the most honest evidence.
In order to find more clues, Jiang An carefully stepped over the bloodstain area, continuing to inspect the surrounding environment.
minutes later, he found no similar dark brown marks elsewhere within eyesight.
Then, he looked up at the ceiling, this movement slightly tensing the muscles in his neck.
The white ceiling paint appeared somewhat dazzling under the light, but his gaze suddenly halted when it passed near the chandelier.
"Senior!" he pointed upwards, "Look there!"
"To the right of the bulb, aren’t there three drops of brown blood?"
"However, the bloodstain is scattered quite randomly, as if something flung it up there."
"Is that really blood?"
Wan frowned, squinting his eyes to carefully scrutinize the dark brown marks on the ceiling, his voice carrying a hint of uncertainty.
Jiang An nodded affirmatively after observing for a moment with his head slightly tilted, "Judging by the color and texture, it should be blood."
"Against the white ceiling, although it has dried and discolored, the splatter pattern on the edges is still faintly visible."
"But..." he paused, pensively adding, "the appearance of bloodstains in such a high position is indeed strange, how were they formed?"
Wan stroked his chin in thought, unintentionally saying, "After bleeding, it should flow down with gravity, this doesn’t make sense."
Upon hearing this, Jiang An turned around to explain, "If it’s naturally dripping blood, indeed that’s the case, but if it’s cast-off bloodstains, they might very well form such reverse patterns."
He pointed at the radiating blood points on the ceiling, "Cast-off bloodstains are quite unique, you see the ’tail’ shape in the stain distribution above; if thrown with inertia..."
Saying so, he demonstrated an exaggerated swinging motion, "Under the effect of inertia, the bloodstain could indeed be flung to that height."
Seeing Jiang An’s directional and forceful gesture, Wan’s eyes lit up in realization, "Indeed!"
"If it’s really formed by cast-off, considering the victim’s height and arm length, it’s indeed quite possible."
He said this while gesticulating, attempting to reconstruct the scene in his mind.
Just as they were intensely discussing, Zhang Yean hurriedly walked in from outside, holding a strong flashlight, beads of sweat dotting her forehead.
She reported, "Just checked the door lock, there’s no signs of forced entry."
Flipping open a notebook, "There’re no signs of sawing, nor any metal shavings or scratches from a forced lockpick inside the lock cylinder."
Upon hearing this, Jiang An nodded thoughtfully, "Since the door lock wasn’t damaged, then the murderer could only have entered peacefully..."
He paused, his gaze sharpening, "It’s very likely the victim personally opened the door for them."
"Opened the door?"
Wan seemed perplexed, raising his voice unconsciously.
"If a familiar person was let in, wouldn’t such a tragedy be unlikely?"
"What kind of hatred must it be..."
His voice gradually trailed off.
After pondering for a moment, Jiang An said, "The possibility of the crime being committed by a familiar person was also suggested by the task force earlier. After all..."
"No signs of violent climbing were found at the scene, and the walls surrounding the yard are covered with smooth tiles, with no shoe or glove friction marks discovered."
Jiang An said this while walking back to the center of the room, suddenly turning to Zhang Yean, "Senior Sister, the direction of the bloodstain above extends from the front left to the top right."
"Bloodstain analysis is your specialty, where else do you think this blood might be distributed?"
Upon hearing this, Zhang Yean immediately looked up, carefully inspecting the direction he was pointing. Her professional gaze noticed the frayed edges of the bloodstain tail extending towards the top right.
Using the characteristics of bloodstain dynamics, she quickly constructed the trajectory of the blood in her mind, determining that the source of the blood should be at the bottom left.
Suddenly, she found a set of linear bloodstains in a groove in the ornate European-style decorative panel."
"Found it!"
"Look, there’s more here!"
Zhang Yean excitedly said, pointing at the traces on the wall almost blending in with the wallpaper.
Jiang An immediately moved closer to examine them, taking a magnifying glass from the toolbox to scrutinize carefully, "Indeed, the color of this place matches very well with the stain above, and moreover..."
He moved the magnifying glass, "The direction and range of the movement match completely."
"If that’s the case, does it fully indicate that when bleeding occurred earlier, the bleeder performed a violent flinging action?"
Hearing this, Zhang Yean chuckled, putting down the notebook in her hand.
"You could say so, but..."
She made an exaggerated expression, "Isn’t this kind of flinging action a bit too forceful? Like swinging a baseball bat."
Speaking, Zhang Yean demonstrated a broad swinging motion, her arm’s movement almost reaching the human body’s limit.
Jiang An continued to analyze, "Actually, I think that initially when the murderer came in, the victim might have let the murderer in, and both had a brief conversation here."
He glanced over at the two used teacups on the coffee table, "You see, the placement of the teacups and the residue of tea..."
Upon hearing this hypothesis, Zhang Yean and Wan both were momentarily stunned, exchanging an incredulous look.
Although this analysis seemed somewhat far-fetched, considering these low-lying bloodstain traces and the subtle traces in the living room, there indeed existed such a possibility.
Both remained silent, holding their breath, waiting for Jiang An to continue his analysis.
Jiang An walked to the center of the living room, starting to reconstruct the scene like a stage director, "Since both had a conversation here."
"During the conversation, a dispute may have arisen, causing the murderer to suddenly draw a knife."
He simulated the action of drawing a knife suddenly, "Next came the struggle between the murderer and the victim. Look..."
He pointed to several radiating bloodstains on the floor, "During the struggle, there are many cast-off bloodstains on the ground, coinciding with the cast-off stains above. Such cast-off bloodstains..."
He emphasized, "Cannot be formed by minor actions alone. They require multiple repeated actions on one hand, and sufficient strength and speed on the other."
Then Jiang An reminded them, "Do you recall clearly? There are open wounds on the male victim’s arms, with edges showing typical defensive wound characteristics."
"Those open wounds are basically arterial tears, causing a large amount of bleeding, and the strength of the arm’s movement fits this blood distribution pattern perfectly."
After examining the photos closely, the two revealed expressions of sudden realization.
"Yes, what you said makes a lot of sense."
"If as you say a dispute occurred in this position, it’s indeed likely a familiar person committed the crime."
Wan added, "Moreover, it should be someone very familiar. The victim let them in at night without concern."
After listening, Jiang An nodded lightly, his expression deepening, "At least for now, whether from the scene traces or the modus operandi, they all point to a familiar person as the murderer."
