Wang Shen and Liang Zichen came back just in time, and at this time, the locksmith had already removed the chain in the door. The door of Han Lin's house was finally opened.

Wang Shen looked at the door lock in the locksmith's hand and asked, "Is there any trace of this door lock being damaged?" ”

When the locksmith heard Wang Shen's words, he checked the door lock in his hand again, then shook his head and replied: "No, the lock cylinder is intact, the chain is also intact, and there is no trace of being passive at all." ”

Wang Shen nodded, and said to the policeman behind him: "Seal this lock, especially the doorknob, and immediately bring it back to the bureau for the people from the laboratory department to check the fingerprints remaining on it." ”

Hearing Wang Shen's words, one of the policemen took a plastic bag out of his pocket, took the lock cylinder and doorknob from the locksmith, and then sealed these things. After that, the policeman and the locksmith left the corridor together.

"Team Wang, I remember you said that you once came to Han Lin's house. Wouldn't that doorknob have your fingerprints on it? Liang Zichen glanced at the doorknob and suddenly thought of this painless question.

Hearing Liang Zichen's words, Wang Shen recalled the visit to Han Lin's house at that time, and then shook his head. "No, because I clearly remember that it was Han Lin who opened and closed the door at that time, and I never touched this doorknob at all. Moreover, even if it has my fingerprints on it, I can clearly explain it to the bureau. ”

After answering Liang Zichen's question, Wang Shen walked to the door of Han Lin's house, stood at the door and looked inside for a while, then picked up his mobile phone and took a few photos to confirm that there was nothing unusual in the house before entering the house.

"Team Wang, why did you stand at the door for a while just now?" Liang Zichen followed behind Wang Shen, puzzled by Wang Shen's behavior just now.

"First, let's observe the original state of Han Lin's house. Sometimes our unintentional actions can destroy some useful evidence. Secondly, you also heard the words of the locksmith just now. There are no signs of the door lock being picked and damaged. In other words, the door chain is locked by the person inside, so who could be the person inside? After Wang Shen said this, he paused and turned his head to look at Liang Zichen.

"Isn't it possible that there is only Han Lin in the house?" Liang Zichen glanced at Wang Shen suspiciously again and asked rhetorically.

"Not necessarily. If Han Lin did commit suicide, then in this case, only Han Lin would be the one who locked the door. But what if he kills? ”

"Huh? Team Wang, it turns out that you always thought that Han Lin's fall was killed by him? Liang Zichen said this in surprise.

Wang Shen heard Liang Zichen's words, sighed softly, and explained: "I told you early in the morning that in every murder case, we must have the attitude of doubting everything and then proving everything with evidence. In this way, no possibility will be missed, and the murderer will not go unpunished. ”

Liang Zichen heard the admonition in Wang Shen's tone, and then silently lowered his head for his carelessness.

"If he kills, the door lock is intact, and the door chain is locked from the inside. Then this is another case of a closed room. But in many closed room cases, the murderer will use a method that I call 'waiting for an opportunity'. When Wang Shen finished saying the last few words, Liang Zichen and another policeman standing next to him all stared at Wang Shen with curiosity.

Wang Shen glanced at the two people, and then continued to explain the meaning of what he said. "The biggest difficulty in the secret room case is the cracking of the secret room. We all know that the murderer is not a god, and it is impossible to shuttle through a confined space. So every chamber has a gap. And this gap is used to commit murder to the murderer. It's just that many times the authorities are confused and can't see where the gap is. After some of the murderers committed the crime, the crime scene was constructed into a perfect secret room. But like I said, the more perfectly constructed the chamber, the less likely it is that the killer will flee the scene. Then you think, if the murderer can't escape the secret room he constructed himself, where will the murderer be? After speaking, Wang Shen turned his head and glanced at the two people standing behind him, waiting for their answer.

Liang Zichen frowned slightly, and then, not long after, a smug smile appeared on his face again. "Then the murderer will trap himself in the secret room he has constructed."

"That's right!" Wang Shen pointed at Liang Zichen with his index finger and agreed. "But all murderers probably had two motives. The first is the success of the murder. The second is to successfully escape the law. Driven by such a destination, what should the murderer do to make the constructed secret room perfect and escape the law? ”

Liang Zichen raised his eyebrows again. This time he thought about it for a bit of a long time, but in the end, he came up with a possibility. "The killer will hide himself at the scene of the murder for the time being. And then after we confirm the secret room, we leave unnoticed? Liang Zichen couldn't confirm the possibility of his guess, and there was still a little doubt in his tone.

"That's true." Wang Shen nodded affirmatively. "That's why I'm going to take a look at the door to see if there are any signs of suspicious people in the house. However, to do so, the environment is relatively demanding. Words here......" Wang Shen glanced at his surroundings and paused. "Anyway, the first thing we have to do is to inspect the whole house."

After speaking, Wang Shen pointed in two directions with his finger, and asked Liang Zichen and another policeman to check in the direction of Wang Shen's finger. Wang Shen himself walked to the room on the other side. After about ten minutes, Wang Shen, Liang Zichen and the other policeman all returned to the living room. Everyone looked at each other and shook their heads.

"Team Wang, it seems that the kind of secret room assumption just now is not valid." Liang Zichen looked at Wang Shen and expressed his opinion.

Wang Shen glanced around the environment in the room again, then nodded and said, "Indeed, it is really inconvenient to hide yourself in the room. ”

"If that's the case, Han Lin is committing suicide?" Liang Zichen asked after hearing Wang Shen's words.

"Still can't be sure, let's think so for now." Wang Shen replied to Liang Zichen's words, and at the same time seemed to remember something. Wang Shen immediately picked up his mobile phone and dialed a number.

"Hey, Xiao Li, you were on duty yesterday, right? I put you in charge of monitoring Han Lin's communication equipment, did you find anything? ”

"Team Wang......" came the voice of a policewoman on the phone. I did my best to monitor all night yesterday. I'm checking the phone number in that person's name, including QQ or something. But this person was like losing touch with the whole world all night, and he didn't even send or receive a spam. After saying that, the policewoman sighed tiredly on the other end of the phone.

"Good work, hard work, I'll invite you to coffee tomorrow." After speaking, Wang Shen hung up the phone in his hand. Reborn Revenge: Goddess, it's hanging again