The Forensic Doctor Better Than a Detective-Chapter 536 - 304: This Is a Heart-Wrenching Deduction Process!
Zhang Yean immediately put down her work and rushed over with a full set of investigation equipment.
As a key member of this special task force, she knew that every detail might be the key to solving the case.
"What important evidence?"
While adjusting the rubber gloves on her hands, she asked eagerly.
Jiang An didn’t answer immediately. Instead, he squatted down and illuminated a mark on the ground with his investigative light.
"Here!"
His voice was low and firm, his finger steadily pointing at a strip mark on the muddy ground.
Zhang Yean immediately put on a mask and bent down to observe closely.
At this moment, Jiang An continued, "Judging by the shape and texture, it should be a piece of phlegm."
Upon hearing this, Zhang Yean frowned suddenly.
As a detective with years of experience, she had collected countless pieces of evidence—bloodstains, fingerprints, hair, cigarette butts, and even more intimate evidence.
But!
"Extracting phlegm," was indeed a first.
"Junior brother, are you joking?"
Zhang Yean straightened up, looking at Jiang An in disbelief.
"Phlegm needs to be extracted too?"
"This might be the first time in the history of evidence identification."
Jiang An wasn’t annoyed by the questioning but instead showed a meaningful smile.
"This phlegm is not simple."
He motioned for Zhang Yean to squat down again, "Look at its strategic position, right in the shadow of this bush."
"Ordinary people wouldn’t choose such a position to spit phlegm."
As he spoke, he gently parted the nearby grass, "More importantly, the grass stems here bear obvious pressing marks, indicating someone squatted here for a long time."
At this point, Mr. Fu also came over.
He pointed at the ground and added, "And this ash."
His fingertips precisely indicated several spots of whitish powder-like substance.
"Judging by the scattered form, it’s not just simple flicking of ash."
"But rather, ash that naturally fell as the smoker moved, indicating someone was pacing back and forth here anxiously."
Faced with the analysis of the two leaders, Zhang Yean, though still doubtful, also realized the importance of this discovery.
"Extracting this phlegm... can it really pin down the suspect?"
By now, Zhang Yean’s tone had shifted from disbelief to skeptical acceptance.
"The possibility is high."
Jiang An stood up, pointing to a half-open window not far away.
"From this angle, you can just see the master bedroom."
"The master bedroom?"
Zhang Yean was initially taken aback, then realized, "You mean on the night of the incident..."
"Exactly."
Jiang An affirmed with a nod, his gaze turning sharp.
The onlooking Wan suddenly interjected with a mischievous smile on his face.
"So when they got intimate that night, there was someone outside peeking?"
He winked and said, "That must have been quite a thrill."
Zhang Yean immediately put on a stern face, "Senior brother, we’re discussing the case, why do you always think off track?"
"Haha, it’s not that I’m impure in thought."
Wan defended with a laugh, "It’s just that the case’s progress is indeed suggestive."
Amid their bickering, Zhang Yean deftly took out a sterile cotton swab and evidence bag, beginning to carefully collect the phlegm sample.
"Junior brother, even if we extract the DNA, there might not be a match in our database."
"First, run it through the database comparison and see if it corresponds with other biological evidence from the scene."
Jiang An briefly answered and then added, "It’s still just a hypothesis."
"At the crime scene, any abnormal detail is worth investigating."
Mr. Fu nodded in deep agreement.
"I’ve worked in criminal investigation for over twenty years, and it’s rare to extract phlegm from a crime scene."
"However, as a long-time smoker, I understand the habit of smoking when nervous very well."
"While stalking, the perpetrator would surely smoke constantly to relieve stress; the dropped ash and phlegm are the best proof of that."
After completing the phlegm extraction, they conducted a meticulous two-hour investigation of the entire scene.
Unfortunately, aside from this special finding, there was limited progress in other areas.
But it was confirmed that there were no signs of ransacking inside, and valuables were intact.
This further ruled out the possibility of a robbery.
At exactly noon, police cars drove into the courtyard of the Jiangcheng City Public Security Bureau’s criminal investigation team one after another.
In the criminal investigation team’s canteen, everyone was silently picking at their meals.
After over a dozen hours of intense work, everyone was exhausted.
Even Zhang Yean, who usually loves to joke, was only mechanically chewing.
Jiang An noticed that many colleagues had dark circles under their eyes, and the clinking sound of chopsticks on plates was particularly crisp in the empty canteen.
Upon returning to the office, Jiang An’s attention was immediately drawn to the whiteboard in front.
This two-meter board was covered with crime scene photos, autopsy reports, and relationship diagrams.
Red-marked lines connected this information into a complex network.
Jiang An stood before the whiteboard, his fingers unconsciously stroking the new stubble on his chin.
"Mr. Jiang, is there any new discovery?"
Zhang Yean came over with a thermos cup, following his gaze to the whiteboard.
Jiang An didn’t answer immediately but picked up a blue marker pen, marking a conspicuous circle in the southeast corner of the house plan.
"Senior sister, please send the phlegm to the unidentified genetic analysis lab for testing."
Zhang Yean’s eyes lit up, "I understand, should we send it for DNA testing right away?"
"Ask them to prioritize it urgently."
Jiang An handed over the evidence bag, a weary smile flickering on his lips, "If it really matches, the credit goes to you."
