The fingerprint comparison work on the latch on the back door of the hotel has been completed, and after careful comparison by the technicians, only the fingerprints of the proprietress Chen's widow are on the door.

This is a very normal thing, after all, she is the one who is responsible for opening and closing the door every day, and if there is no her fingerprint on it, it is called abnormal.

That is, either no one enters or exits through the back door, or the person who enters and exits through the back door opens and closes the door with gloves.

Of course, the premise of everything is -

Liu Ziyun did not lie.

At this moment, Lin Lei and Officer Li were sitting on the sofa in the lobby of the hotel, Lin Lei lowered his head and thought about the case, while Officer Li accompanied him, waiting for Detective Lin's reasoning.

After about a few minutes, Lin Lei raised his head and said to Officer Li: "Regarding this case, I still have a key point that I can't figure out, I think this should be that we don't have enough information at present. ”

"Oh, what is it that can't figure it out?" Officer Lee asked immediately.

Lin Lei sighed and said, "Although I already have a preliminary idea in my mind, it's not the time to say it. ”

Officer Li looked surprised, as if he realized something: "Detective Lin, do you know who the murderer is?"

Lin Lei was noncommittal, but said to Officer Li: "I need to determine a few things, you go and investigate them right now." ”

Officer Li hurriedly promised: "Okay." Detective Lin, what are you going to investigate?"

After Lin Lei sorted out his thoughts, he said slowly: "First, as far as I know, the deceased Du Chengming would come to Tianchang Town to report on this sacrificial ceremony every time before and after the 'General Zheng Sacrifice Ceremony', and it was obvious that Du Chengming was in Tianchang Town when the 'Headless Ghost Case' happened five years ago. Now what I need to know is whether there is any relationship between Du Chengming and the deceased Gu Yuchang five years ago. ”

Officer Li took out a notebook and nodded while recording Lin Lei's words.

After a pause, Lin Lei continued: "Second, did Liu Ziyun, Li Min, Zhang Yunpeng, and Lu Yuling be in Tianchang Town five years ago?"

Officer Lee took notes and then asked, "What about the third?"

Lin Lei thought for a moment and said with a smile: "Third...... Thirdly, I haven't figured it out yet, so you should investigate these two things right away. ”

Officer Lee took the suspect and the witness back to TB's police station for investigation, and according to the procedure, the four were allowed to be detained for 24 hours.

Of course, for the sake of humanity, no one knows whether they are suspects or witnesses, and it is inconvenient to lock them up, so after the police have done their investigation, they will still let them go home, but there are police officers watching near their residences.

Officer Li, the police officer at the scene, took some of it away, and the remaining part continued to stay in the vicinity of the crime scene to investigate and visit.

……

Following.

All the findings were summarized in front of Lin Lei.

There is no special connection between the two deceased, Du Chengming and Gu Yuchang, who have passed five years, and the two don't even know each other.

And five years ago, Liu Ziyun, Li Min, Zhang Yunpeng, and Lu Yuling were not in Tianchang Town, which means that the murderer of Gu Yuchang was not one of these four people.

After hearing the news, Lin Lei let out a long breath, and it seemed that everything was under control.

Who exactly is the murderer?

What is the ins and outs of this case?

Officer Li didn't have a clue, but looking at Lin Lei's expression, it was obvious that this famous detective had solved all the puzzles.

Lin Lei asked Officer Li to bring all the people involved in the case to the Jiaxing Hotel, where he wanted to uncover all the mysteries of this "headless ghost case".

After everyone arrived, Lin Lei habitually glanced at everyone, and then began to solve the riddle.

Lin Lei's gaze stayed on Liu Ziyun, and said slowly: "On the night of the crime, Miss Liu Ziyun, who lived in room 202, saw a headless black shadow walking out of the back door of the hotel. This is a very important clue, and if Liu Ziyun's testimony is credible, then we can deduce a lot of useful information from it. ”

Everyone held their breath and looked at Lin Lei nervously, and no one interjected.

Lin Lei took a deep breath and continued: "First of all, let's assume that Liu Ziyun's testimony is true......

At this time, Liu Ziyun frowned slightly, obviously a little unhappy, and the expression on his face clearly indicated that his testimony must be true.

Of course, Lin Lei saw Liu Ziyun's expression, waved his hand, and signaled that Liu Ziyun did not need to speak in a hurry, and Lin Lei continued: "She saw that the figure opened the latch at the back door of the hotel and walked out, but according to the testimony of the proprietress, the back door was closed the next morning. This door is a latch lock and can only be locked from the inside, that is, the following two situations can occur. ”

After a pause, Lin Lei continued: "First, that figure has nothing to do with the person in the hotel, this person first came in from outside the wall, and then pretended to walk out from the back door of the hotel, and after being deliberately seen by Liu Ziyun, he sneaked back, closed the back door, and went out over the wall. The purpose of this is to make people think that they are from the hotel. But we looked around the backyard fence and didn't find a single piece of broken glass ballast. Everyone knows that the fence is covered with broken glass shards, if someone climbs over the wall to go out, some glass ballast will definitely fall on the ground. After this situation was ruled out, only the second situation remained, and that was that the person must have had something to do with the person in the hotel. ”

At this point, everyone present, you look at me, I look at you, everyone has a stunned expression.

Lin Lei took out a betel nut from his pocket, chewed it slowly, and after a while, he continued: "There are two possibilities here, the first possibility is that the figure is the person in the hotel, and after pretending to be a ghost and walked out, he returned to the hotel and locked the back door; In short, whatever the possibility, it proves that the figure that appeared in the dark night has a very close relationship with the people in the hotel. In other words, this case is also closely related to this Jiaxing Hotel, which is why I want to bring everyone back to the hotel today to decrypt it. ”

Lin Lei's words caused a lot of commotion among the people, and everyone looked at each other, no one dared to believe that there was a cruel murderer sitting around them.

At this moment, Officer Li seemed to have some different opinions, and after obtaining Lin Lei's consent, he whispered: "Detective Lin, your reasoning is very logical, but there is a problem here......"

Lin Lei smiled slightly, as if he had long known Officer Li's question, he said with a smile: "All this is inferred from Liu Ziyun's testimony, that is to say, if Liu Ziyun's testimony is true, then the murderer in this case must be related to the people in the hotel——"

Lin Lei suddenly turned his words, his eyes did not look at Liu Ziyun, but at Officer Li: "So, do you think Liu Ziyun's testimony is credible?"

Officer Li was stunned for a moment, and his brows furrowed.

After thinking for a moment, Officer Li shook his head and said, "As the saying goes, 'people's hearts are separated from their bellies', who knows if what she said is true or not?"

Lin Lei smiled and said lightly: "Liu Ziyun's words are not credible, isn't this an obvious thing?"