Chapter 2587: Dear Detective Mr. 39

At that moment, the doorbell rang outside, accompanied by Duo Xi's unmistakably cheerful voice.

"It's Duo Xi and the Dean coming."

Jin Chen reacted, lowering his voice to remind, "Duo Xi mentioned earlier that today we need a guardian's signature to formally submit the university preparatory application form."

Al Rui Ke was enjoying the kiss, but being interrupted obviously displeased him; he mischievously moved in again and bit Jin Chen's lower lip, leaving a light tooth mark.

He then quickly grabbed the suit jacket draped over the back of the nearby chair, threw it over Jin Chen, cleverly covering the front of his shirt that had been soaked with milk.

"And you?" Jin Chen asked, glancing down at his reaction with a faint smile.

Al Rui Ke casually snatched the pajamas Jin Chen had taken off earlier and placed on the sofa armrest, quickly slipping them on.

As for why Jin Chen's pajamas were in the living room…

The reason goes without saying.

Fortunately, the design of the round tube house requires passing through a not‑short corridor from the main gate before reaching the living room.

This bought them a precious few dozen seconds to tidy up.

Duo Xi led the poised female dean into the dining room, which had largely been restored to tidiness.

"Al Rui Ke! Xi Li Er!" Duo Xi came running in excitedly, cheeks flushed, tightly clutching a form.

"The Dean got me a recommendation slot! I can directly take the preparatory class entrance assessment! I'm so happy!"

"It's a hundred times happier than being forced to attend the ladies' etiquette class!"

Al Rui Ke sat back down, took the application form, examined it carefully, then swiftly signed his name in the guardian signature column.

After signing, he raised his hand and flicked Duo Xi's forehead with moderate force.

"You little brat, I hired you originally to be the front desk of my detective agency, to answer calls and organize files."

"You, on the other hand, spend all day buried in books, and now you're even spending my money to go to university."

Duo Xi covered her forehead, unafraid, and retorted righteously, "Al Rui Ke! How dare you say that! Your detective agency hardly has any business!"

"If I don't find something to do for myself, I'll go moldy!"

Al Rui Ke: "……"

He glared at her angrily.

The female dean beside them was amused, gently shaking her head.

Duo Xi quickly cheered up again, took the dean's hand, and enthusiastically invited her upstairs, eager to share her treasures with this new friend. "Dean, I've collected lots of beautiful plant specimens and picture books, plus some notes my father left behind—you'll definitely be interested; let me show you!"

The dean smiled and agreed, politely nodding to Al Rui Ke and Jin Chen, then followed the enthusiastic Duo Xi upstairs.

【Villain Blackening Value detected -10, total now 25!】

Jin Chen looked at Al Rui Ke, knowing he had long regarded Duo Xi as a sister; though he complained verbally, he was still happy for her.

Seeing her now find the path she wants to take, he surely feels relieved as well.

Jin Chen leaned in and kissed Al Rui Ke's cheek, announcing his plans: "Dear, I need to go to Orga Zhuang Yuan again this morning; please have Young Master Yuē Han cooperate with the investigation—will you join me?"

Al Rui Ke gave Jin Chen a deep look.

He then shook his head firmly, "No, destroying the Griffin Gang is just one step away; I can't miss it—I need to see it collapse completely with my own eyes."

This is his obsession, and also the goal he has pursued for years while lurking in darkness.

As Al Rui Ke spoke, he reached out, pulled Jin Chen close, and bit a spot on his neck where the collar couldn't cover, leaving a mark.

"All right," he released his grip, "Go, and come back soon."

Jin Chen touched the fresh tooth mark on his neck, laughing and crying at once.

——

Upon hearing Jin Chen's purpose, Yuē Han immediately sent someone to fetch the doctor who had previously treated Vincent's cold.

Facing the questioning, the doctor initially said quite confidently that he had prescribed only regular medicine for ordinary wind‑cold.

But when he realized the detective's inquiry about the prescription might be related to a murder case, he immediately broke out in a cold sweat, and his speech began to stutter.

He grimaced, struggling to recall and explain, "Yes…… the prescription was indeed a common cold medicine…… but Young Master Vincent had been coughing badly, unable to sleep at night, so I added two…… stronger medicines that could quickly suppress coughing and calm him."

"Exactly! It's a new medicine; I recall it was just recently sent from London, a brand‑new variant—what's the problem?"

Yuē Han's face grew grave; he immediately told Jin Chen, "I'll have people check the sources of those two new medicines right away, Xi Li Er—do you have any other leads?"

Jin Chen sat in the armchair by the window in the study, sunlight streaming through the glass onto his notebook on his lap.

He pondered, his long fingertips lightly drawing circles on a certain page.

The maid Moli's testimony: on the night of the incident, she had once heard Young Master Vincent playing the violin in the study.

Previously, this detail hadn't attracted much attention; it was merely seen as Vincent's personal habit for relieving emotions.

But in light of what we now know, this sudden violin‑playing on the eve of his death appears rather abrupt and strange.

"The violin……" Jin Chen lifted his head, looking at the anxious Yuē Han, "Young Master Yuē Han, who did Young Master Vincent study violin with? Which pieces does he usually play?"

Yuē Han froze for a moment, not expecting him to ask that.

"His introduction was taught by me; later his father hired a master to instruct him for several years."

Speaking of the past, a flicker of nostalgia and pain crossed his eyes.

Jin Chen stood up, "Let's try it."

"Please have Moli come over and try playing a few of the sheet music pieces Young Master Vincent practiced most often while alive, so she can listen carefully and see if she can identify which one was heard that night."

Yuē Han immediately did as requested.

He had the male servant fetch the violin he himself had not touched in a long time, kept in storage.

The family doctor had already been politely seen off by the butler.

An hour later, in the study, Yuē Han endured the physical discomfort and weakness from his opium addiction, tuning the strings and playing one piece after another from memory.

Upon reaching the seventh piece, it was a somewhat melancholy melody, but the technical demands were quite high for a classical movement.

Moli, sitting nearby and listening attentively, suddenly rose to her feet, uncertain yet somewhat excited.

"Young Master! It seems to be this piece! The melody is very similar; that night the young master was playing this melody, intermittently, as if his mood was not very good……"

"Jin Chen lifted his gaze, his eyes lifting from the notebook, looking at John, whose forehead was already beading with sweat and whose face was pallid."

"Any leads? Young Master John, think it over—does this melody have any special meaning for you two?"

"John put down his bow, pulled out a handkerchief with his slightly trembling hand, covered his mouth and coughed violently for a while, then wearily sank into the sofa, clutching his hair as he tried to think deeply."

"I really can't think of anything special about this piece…… It's quite classic, found in many violin collections…… Or…… could it be the sheet music?"

"He looked uncertainly at Jin Chen, 'When Vincent was first learning, I gave him a violin collection that contained this piece. He's always treasured that book……'"

"'Where is that book now?' Jin Chen asked immediately."

"'In my study.' John said."

"John immediately ordered his personal male servant to search the study."

"The sheet music had been hidden for too long, wrapped in a cloth bundle on the outside."

"John took the sheet music, untied the cloth bundle's strings, suddenly froze, his eye sockets quickly reddening."

"He turned to the page containing that piece, and between the yellowed papers lay a neatly folded, unsigned letter."

"On the front of the envelope was Vincent's elegant, slightly sharp handwriting:"

"John·Olgar, to be opened"

"Jin Chen leaned back against the chair and let out a soft breath."

"Fortunately…… this wasn't in vain."

"He looked at John, tears streaming down his face, his voice gentle: 'John, go ahead and open it.'"