"She graduated from university and then went to work at the deceased's psychological clinic. This woman is really persistent. Did she kill him because her love was rejected? How romantic!" Someone joked from below, and the originally serious and somber atmosphere was instantly broken by bursts of laughter.

Wang Shen smiled slightly at the opportune moment. The already somber atmosphere wasn't conducive to the flow of thought or the exploration of clues. "I spoke with the deceased's secretary, and she told me that the deceased had a habit of drinking coffee in the morning. This statement contradicts the facts we've investigated. You can all take a look at the basic documents at hand, mainly the autopsy report." After Wang Shen finished speaking, everyone lowered their heads and began to peruse the documents. After a while, everyone looked at Wang Shen in unison; some showed confusion, while others seemed to understand perfectly.

“As you all discovered from the information, the victim's exact time of death was between 11 PM and midnight. The cause of death was an overdose of sleeping pills. We also found the source of the sleeping pills in the victim's desk drawer. Now we can reconstruct the scene of the murder. The murderer entered the victim's office, and the victim drank coffee laced with a sedative poured by the murderer. The victim realized the murderer's intentions and threw the coffee cup at the murderer. At this point, the victim had already lost the ability to move. Then, the murderer forced a large amount of sleeping pills into the victim's mouth. Based on his knowledge of the victim, the murderer wrote a confession on the victim's computer screen, creating the illusion of suicide. Finally, the murderer discovered the coffee stains on the floor and then clumsily disposed of them. The secretary has already admitted that she spilled the coffee herself. The secretary's claim of delivering coffee in the morning is false.” After Wang Shen finished speaking, everyone present showed expressions of sudden realization.

“Alright, now we can take another look at the surveillance footage of the public area around the time of the deceased’s death.” With that, Wang Shen walked to the computer and started playing the retrieved footage on the projector screen. “Okay, everyone, look at the time here.” Wang Shen pressed the pause button. At the same time, Song Mu’s secretary, Xu Wen, appeared on the screen. Everyone could clearly see that Xu Wen had left work with her bag at 10:30 PM. But strangely, Xu Wen hadn’t locked the door, perhaps because Song Mu was still in the consultation room. Wang Shen’s finger hovered over the mouse for several seconds before pressing the left mouse button.

Wang Shen sped up the playback of the surveillance video. Twenty minutes later, at 10:50 AM, a figure appeared at the entrance of the psychological clinic. At this moment, Wang Shen pressed the pause button again. "The real suspect has appeared. This person should be the murderer," Wang Shen said, pointing to the person on the projection screen with a laser pointer.

“That’s not right. This doesn’t match our earlier theory at all. We all thought the murderer was the secretary, how come it’s suddenly a man?” One of the police officers frowned, pointing his index finger at the person on the projection screen and raising the question. Indeed, a “man” wearing a trench coat, hat, and mask appeared on the projection screen.

"Please take a closer look, everyone. Are you absolutely certain this person is a man?" Wang Shen said, waving a laser pointer across the man's trench coat. "First of all, given the current temperature, wouldn't wearing a trench coat like that be too hot? Secondly, coming to a mental health clinic wearing a hat and a mask seems a bit too much of a self-protection measure. And look at the time, who would come to a mental health clinic this late?"

"Captain Wang, you mean... 'disguise'?" The young policeman cautiously uttered the last two words.

Wang Shen looked at the young policeman, nodding and smiling. "That's right, but it's not that exaggerated. I mean, her disguise skills aren't that great. Look at the lower half of the trench coat." Wang Shen shone the laser pointer around the suspect's ankles a few times. "The pants in this area are clearly not men's trousers. Look at this spot now." Wang Shen then moved the laser pointer to the brim of the hat. “Some of the hair here has fallen down. Judging from the length, this fallen hair belongs to a woman; and a woman who had her hair permed. Because the public security cameras at the mental health clinic where the deceased was treated have blind spots. These blind spots are mainly in the restrooms and the stairwell. So I can make this assumption: after leaving the mental health clinic, Secretary Xu Wen went directly into the public restroom outside. Then she changed her clothes in the public restroom before entering the mental health clinic. But she had to change back into her original clothes in the mental health clinic so as not to arouse the deceased's suspicion. This is a really complicated operation, no wonder so many flaws were revealed when she changed clothes. In order not to give herself away, we found that the internal surveillance cameras of the mental health clinic were turned off early in the morning.” After saying this, Wang Shen couldn't help but sigh.

“Since so many clues point to that secretary, I think it’s better to act sooner rather than later,” the older policeman advised.

Wang Shen nodded. "In that case, please have Xiao Liang and Lao Li accompany me." Wang Shen glanced at the policeman who had spoken, then at the young policeman sitting beside him. The case analysis meeting concluded there, and everyone left the office one by one.

Wang Shen's keen insight into case clues and his exceptionally quick reasoning once again impressed everyone. The young policeman, who had only been with the force for a year, was someone Wang Shen hadn't really paid much attention to before. This incident made Wang Shen truly understand the meaning of the saying, "New talents emerge in every generation."

"What? Did you see yourself from back then?" The young policeman followed behind Wang Shen and the older policeman. The older policeman leaned closer to Wang Shen and asked quietly with a smile.

"Yes, I'm afraid the old guard will be left behind." Wang Shen joked, and then laughed a few times.

As the three men walked out of the office area, they saw the older policeman heading towards the police car. "Old Liang, don't drive the police car, take my car instead," Wang Shen waved to the older policeman, and the three men got into Wang Shen's car.

Through the files, Wang Shen could only find the home address of his secretary, Xu Wen. The car sped along in the glow of the setting sun; another day was drawing to a close. Wang Shen's mood was indescribable; even though he had pieced together the threads of several cases, the culprit was practically obvious. Suddenly, the entire car fell silent; no one knew what to say. Finally, it was the young policeman sitting in the back who broke the silence.

"Captain Wang, can I ask you a question?" The young policeman spoke softly, sounding somewhat cautious.

"Okay," Wang Shen replied simply.

"Captain Wang, are you not going in a police car because you're worried about the murderer's reputation?"

After the young policeman finished asking his question, Wang Shen did not answer. The young policeman paused for a few seconds, then thought for a moment and said, "Since they are criminals, does their pride still matter that much?"