"Thank you very much for your help." Shinoru's big eyes flickered, and the corners of her mouth drew a bright smile that was just right.

"Oops~ Where, where! I just want to thank you! The bald man in front of Xiaolu touched the top of his head covered with cold sweat, hurriedly called up the surveillance video, and complimented him repeatedly. Actually, the principal asked me to give an explanation next week, but ...... Where can I find out! So far, there has been no progress at all...... I'm so saddened! ”

The bald man looked entangled for a moment, but then looked at Shinoru with a flattering expression.

"Before, I didn't know Taishan with my eyes, and I had a bad attitude...... Please also have a lot of them, please help me! If I can't find out again, I, the head of the school's security section, will be fired! ”

"Hehe, it's okay, as long as you can cooperate with our work." Xiaolu was still smiling, and moved her eyes to the large monitoring screen in the school security room, and asked. "Is this the relevant surveillance video of the day before the 'blood letter' appeared in the lecture hall of your school?"

"Yes, yes. I've kept the video of the corridor in front of the lecture hall that day, just to check the criminals, but it's a pity...... Nothing was found. The bald man shook his head, his face full of chagrin.

"The principal didn't allow us to ask for help from outsiders, saying that 'the school ugliness should not be publicized', but fortunately, two chiefs happened to come to investigate the case, and they were merciful and helped me solve this matter by the way, thank you so much!! Ah, by the way, don't tell the headmaster about me asking you to help! ”

"Hehe, don't worry, we are secretly investigating the case, don't tell others about our coming, and don't ask more about our case, otherwise...... I'm afraid you're going to be in trouble~" Xiaolu looked at the bald man, with a deliberate touch of melancholy on her face, but her words revealed a faint sense of deterrence. This made the latter break out in a cold sweat again, and immediately raised his hand and swore an oath.

"Please rest assured, two chiefs! I promise, I won't ask what I shouldn't! I won't say a word about the two of you coming to investigate the case! "The bald man looked genuinely frightened." And today is a Saturday and Sunday, the teachers and students are not there, if you want to see the scene, you can do it, no one will find you! ”

"Well, we'll go to the scene later, let's take a look at the monitoring here first, and you can go out and do other things." Shinoru politely but undeniably waved at the bald man.

The bald man nodded again and again, and was about to withdraw. Suddenly, as if he had thought of something, his expression was entangled for a moment, and he hesitated to speak again:

"That...... Sir...... Forehead...... About what I was fooling around around outside before...... Million...... Don't tell me about the dominatrix at home! If she found out...... I...... I'm done! ”

"Alas, don't worry~ As long as you can cooperate well, we are not in the mood to meddle in our affairs~" Xiaolu smiled softly, but the bald man couldn't help but get goosebumps, and he didn't dare to have any doubts at all, so after a thousand thanks, the bald man nodded and withdrew from the security room.

"You...... OK! I witnessed the bald man's attitude change from arrogant at the beginning to flattering Ye Yu. Involuntarily stretched out his thumb and praised Shinoru sincerely.

"Hehe, it's just a small test~ If I can't even play a small role at this level, how can I be a special affairs investigator~" Xiaolu put away a sweet smirk. Pouted. "I've already checked the details of this security section chief in advance, as long as he grabs his handle, he only has to obey orders obediently~"

At this time, Ye Yu and Xiao Lu were monopolizing the security room of Chen Xin's school, looking at the relevant monitoring of the "blood word incident" in the ladder classroom mentioned by Chen Xin.

For the two headless female corpse murders that occurred in the city one after another. Even though news control has been implemented to reduce the panic of citizens, it has had little effect. Rumors soon swirled. Under pressure, the police are currently combining the common social relationship between Zhao Jie and Cao Yan, and are ******** to investigate in the direction of the murder of unscrupulous elements, and sneer at Ye Yu's statement that "the case is related to Lin Yutang".

However, Ye Yu did not give up the investigation because of the police's ignorance, in fact, this aroused his fighting spirit, he intuitively felt that the death of Zhao Cao and the others must be related to the incident of Lin Yutang being bullied, although he did not agree with Chen Xin's "ghost killing", but the various strange phenomena described by Chen Xin before may become a breakthrough in the case, and Ye Yu and Xiaolu also appeared here in order to find out this "breakthrough".

Of course, being able to stand here and freely access the video and have the opportunity to explore the site is also thanks to Xiaolu's superb means, which really makes Ye Yu sigh to himself.

"This is it, at 18:24 that evening, the last students withdrew from the lecture hall where the accident occurred." Xiaolu stared at the image on the screen, explaining to Ye Yu.

Ye Yu raised his head and looked at Xiaolu's line of sight, only to see the camera in the video screen facing a classroom door diagonally above, showing the entry and exit of the classroom at a glance.

In the picture, a security guard is standing impatiently at the entrance of the classroom, as if waiting to lock the door, and his mouth is also talking to the classroom, as if he is urging something, due to the limited radio effect of the monitor, Ye Yu can't hear what the other party is saying.

After a while, two boys with mops and buckets walked out of the classroom one after another, as if they had just finished cleaning, and the security guard seemed to have finally completed the task, after the probe confirmed that there was no one in the classroom, he closed the classroom door, and reached out and pressed the lock button on the fingerprint machine on the side.

The scene is quiet again, with only a lone door and a partially narrow aisle in the shot, and there is no trace of the movement of a living person.

"According to the bald head, no one has been at the door of the classroom until the night, so we can fast forward." As she spoke, she adjusted the control buttons, and the video screen began to flow at a high speed, and the light on the screen became darker and darker, until only an emergency light was left to reflect a place in front of the lecture hall.

"That security section chief should have watched this video several times, didn't he really find anything?" Ye Yu observed the picture of the empty classroom door and asked Xiaolu.

"If he had found anything, he would have come to us for credit." Shinoru snorted and shook her head. According to him, the security guards did not notice anything on the wall at all before locking the door, and no suspicious person entered the lecture hall all night, and then when they opened the door the next morning, they found that the walls were covered with shocking blood letters.

"And the handwriting of these blood characters is almost exactly the same as Lin Yutang." Ye Yu recalled what Chen Xin had said earlier. "The content written in blood is also an accusation that her homeroom teacher did nothing about her being bullied, which looks like ......"

"It's like a curse written by Lin Yutang's ghost himself." Xiaolu suddenly turned her head, looked at Ye Yu expressionlessly, and said coldly.

"This ...... How is it possible, do you think it's a campus weirdo? Ye Yu swallowed his saliva and avoided Xiaolu's gaze with some weakness.

"Hahaha, I'm scaring you~" Looking at Ye Yu's stiff expression, Xiao Lu smiled triumphantly. "But to solve this puzzle, we can only start with surveillance video."

“…… Yes, although the head of the security section said that he didn't find anything abnormal, there may be some details that he didn't notice, so he ...... Alas? Wait, did you hear anything? Ye Yu was halfway through his words, and suddenly made a silent gesture to Xiaolu, and at the same time put his ear close to the monitor's sound port, listening attentively.

After a moment, he looked up, his face slightly pale.

"Then let's play back the two-minute video just now...... I really...... As if I heard some kind of ...... The voice ...... "Ye Yu was a little hesitant.

"Voice? In the video? Seeing that Ye Yu's performance was not quite right, Xiaolu immediately rewinded the video as Ye Yu said, and turned the volume of the video to the highest.

There was silence in the guard room, Ye Yu and Xiao Lu listened nervously with bated breath, and after a few seconds of silence, an eerie sound suddenly echoed in the quiet guard room.

“…… Woo...... Woo......"

The faint and strange cry of sorrow was like a ghostly cry, which sent chills down the spine of the two people in the room. At this time, the surveillance screen is still empty, and the source of the sound seems to be ...... It's in the locked lecture hall.

"It's ...... What was that...... Is there a ...... in the classroom? Someone?? Xiaolu's face was a little ugly, and she subconsciously leaned towards Ye Yu's side.

"The video has limited sound and I can't really hear it...... But from what we've just watched, it's ...... There can't be anyone. Ye Yu's heart was also a little hairy, and he glanced at the time of the video here - 1:12 in the morning.

When watching this surveillance video, it should have been late at night, and it is impossible for anyone in the school to be stranded near the classroom at this time...... If that's really "human".

Thinking of this, Ye Yu suddenly broke out in a cold sweat, he shook his head vigorously, and threw out his cranky thoughts, and at this time, the sound in the video also gradually disappeared after a period of time, which finally freed Ye Yu and the two from their panic temporarily.

"This voice is very soft, and if you don't listen carefully, you won't notice it, and you must have noticed that the bald head from before didn't notice it at all." Xiaolu hurriedly turned down the video sound a lot, and although her face remained calm, she still seemed to have palpitations.

“…… Wait...... Wait a minute, who is that?? Ye Yu stared at the screen tightly, and suddenly found that something seemed to have broken into the picture.

I saw a dark shadow appear faintly at the door of the classroom, sticking out his head and looking through the glass into the door. (To be continued.) )