September 5, 2020, 8:30 a.m.

Most of the people in the criminal investigation detachment have not slept all night, and now twenty-seven hours have passed since Zhao Guangming was killed, and twenty-eight hours have passed since Sun Jianing was killed.

Coming out of the dormitory, Song Chuan and Fathead Fish ...... Walking with Qin Feifei, the person who came looked at each other and yawned in unison.

"Chuanchuan, I don't think you're very good, you went back and forth three or four times last night...... Legs are weak? ”

Song Chuan yawned speechlessly, and glanced at Qin Feifei's plump fathead fish with dark circles under his eyes: "Qin Da Beauty, I ran all the hotels and inns in our detachment last night, and my legs are thin, can you not be tired?" ”

"Also, can we not be so ambiguous when we speak, who stipulates that you can't go back to the team after the investigation visit?"

Looking at Qin Feifei, who also had dark circles under her eyes, Song Chuan was a little puzzled: "You shouldn't have worked overtime last night, why did you yawn all day?" ”

After speaking, Song Chuan turned his head and looked at Qin Feifei's dormitory suspiciously: "Have you watched the film?" ”

"yes, how do you know?" Qin Feifei stretched her beautiful waist, and the sparkling tremor was very eye-catching: "I stayed up all night to finish the Sherlock Holmes detective case." ”

Song Chuan straightened his collar, took a deep breath, made himself feel more energetic, and then had a headache: "Qin Da Beauty, do you mean the same thing as what you said about watching movies?" ”

"It's what you thought, senior sister, I'm such a pure girl, how can I look at those strange things, I don't know Mr. Ozawa and Fairy Ikong......"

These people ...... Song Chuan actually didn't know either: "Then you don't sleep if you're fine, what are you watching Sherlock Holmes?" ”

Pulling down the broken hair in her ears, Qin Feifei naturally approached Song Chuan and whispered in her ear: "Exciting, I think that the technical work behind the scenes has buried my talent, so it's better to fight with you." ”

Although Song Chuan could understand what Qin Feifei meant, how could this be a little ...... when it came out of her mouth Strange.

When Song Chuan and other field criminal police were busy, the technical room also got off work very late.

In the No. 1 conference room, forensic doctor Chen Guojun and technical office supervisor Xia Dong are reporting on the progress of the work.

Chen Guoping operated the conference room projector: "Lao Sun's autopsy has been completed, and it was determined that the cause of death was a ruptured carotid artery and a shock death caused by excessive blood loss, and the specific time of death was about 12:10 a.m. on the 4th." ”

Wang Tao added: "We visited and investigated all the residents in the family home, and no one found any abnormal people, except for the pet dog raised downstairs of Lao Sun's house barked in the early morning, there was no other obvious abnormality. ”

"Although the rain slowed down in the early hours of yesterday morning, all the traces in the yard were washed away, and the footprints in the corridor were extracted from the survey, and it was found that they were all new footprints, and the overlapping footprints seemed to have been cleaned up, and no valuable clues were found."

The investigation of the family home of the old criminal investigation detachment is very unsatisfactory, there are almost no clues to explore, all traces are wiped out in the autumn rain, and the murderer even cleaned the corridor when he left Sun Haining's house, which shows the caution of the other party.

Chen Guojun continued to report: "We have compared the traces of the knife edge, combined with the magnification analysis of the shape, depth and edge of the chest, we can determine that the murderer used a very sharp short-edged knife. ”

Speaking of this, Chen Guojun looked at Song Chuan, who was sitting at the end of the conference table: "Consistent with Song Chuan's guess, the murderer killed Lao Sun with a razor blade!" ”

It's really a razor blade!

Everyone's mind is in their minds, and this speculation is not only to determine what tools the murderer used to kill people, but also to provide a lot of information from the side.

The razor blade is very small and thin, and the average person will be very careful when using it, and cutting the throat and carotid artery with this kind of thing can only show that the other party's technique is very skillful and must have been professionally trained.

In addition, at the scene of Sun Haining's murder, he was not found to have the habit of using razor blades, so the murder weapon should have been carried by the murderer himself, and combined with the fact that the other party stabbed him from behind, it means that the other party had premeditated to kill Sun Haining.

Chen Jianbin pondered for a moment, as if digesting the results of Chen Guojun and Wang Tao's investigation, and after a while, he looked at Xia Dong, the director of the technical room: "How is the progress in the technical room?" ”

Xia Dong got up and took the remote control in Chen Guojun's hand and flipped the PPT: "We conducted a DNA identification of the hair and dander collected in Sun Haining's bedroom and kitchen last night, and the results were all Sun Haining's own police officer, the murderer cleaned the living room and bathroom, and did not go anywhere else." ”

"There is also the roster, on which we only found Officer Sun Haining's fingerprints, and no other fingerprints exist."

Well?

Xia Dong's analysis made Song Chuan feel a little full, and it was possible that the page that disappeared in the roster was torn up by the murderer and wanted to conceal the information, or Sun Haining deliberately tore it off to leave evidence for the police, and Song Chuan even returned to the scene because of this.

But now, the technical testing of the technical room seems to determine some possibilities.

"Director Xia, are you saying that there are fingerprints on the roster, and there are only the fingerprints of Officer Sun, and there are no traces of being cleaned?"

Seeing that it was Song Chuan who asked, Xia Dong nodded: "Yes, there is no trace of the fingerprints on the roster being cleaned." ”

This...... That's not right.

The murderer of Sun Haining was very cautious, and the other party removed all traces of his room in Sun Haining, not even the corridor.

So why didn't the other party clean up the fingerprints on the roster, if the other party really touched the roster.

In the face of Song Chuan's question, Chen Jianbin , Wang Tao and others also understood Song Chuan's doubts.

That's who tore off page 66 of the roster.

If it was torn by the murderer, then there was no reason why he didn't clean up the fingerprints on it, even if he was wearing gloves, but with the murderer's practice of thoroughly cleaning up his traces at Sun Haining's house, he would not leave a separate roster for cleaning.

But the fact is that there are Sun Haining's fingerprints on the roster, which means that the murderer has not touched the roster, so naturally he will not tear off page 66.

Therefore, Chen Jianbin looked at Song Chuan: "Xiao Song, do you mean that the page of the roster that disappeared is likely to be the clue left by Lao Sun?" ”

Song Chuan nodded solemnly: "I personally think that this probability is greater now, but the problem now is that the page of the roster that was torn off has disappeared, and when did Officer Sun tear up the roster?" ”

"The murderer should have killed Officer Sun suddenly, from behind, so according to common sense, Officer Sun has no time and opportunity to leave us clues...... Unless ......"

Song Chuan's eyes were full of suspicion: "Unless Officer Sun already knew that someone was going to kill him, and the information on the sixty-sixth page of the list that disappeared was very likely to be with the other party!" ”

Complicated and confusing.

Regarding this case, Song Chuan actually has a deeper understanding of other people, and it is also determined that Sun Haining's killing and Zhao Guangming's death are very likely to be committed by one person, because when the system rewarded Song Chuan with fifty points to solve the case, he was clearly told that this was a clue to a major serial case.

But what's on the 66-page list that disappeared?

The murderer did not move the roster, but took the 66th page torn out by Sun Haining, which is the most reasonable speculation so far.