Of course not.

It took the police three or four days to investigate these clues and evidence alone.

During this period, a large number of police forces were mobilized.

If it is another suspect, the human and material evidence is complete, and the investigation of the case is basically successful, and then it is only necessary to supplement and improve the evidence chain, and then hand it over to the prosecution for processing.

But the problem is that the suspect is Xu Mo.

The identity of Detective Xu Mo, the policeman's impression of him is one thing.

The most important thing is that Xu Mo has a high IQ and a strong sense of anti-reconnaissance.

If Xu Mo really wanted to kill someone, would he leave so many clues and witnesses?

Liu Tao looked at Fang Mu and asked, "You have a lot of dealings with Xu Mo, with your understanding of him, would he be so careless?" ”

Fang Mu frowned, thought for a while and said, "It stands to reason that with his IQ and anti-reconnaissance ability, it is impossible for him to make such a low-level mistake. ”

Liu Tao nodded.

"There's another possibility."

When Liu Tao heard this, he narrowed his eyes and answered: "He deliberately left so many flaws. ”

"After all, except for someone in the school who saw Xu Mo following Chen Xuefeng before, the rest of the witnesses did not see his face clearly, including the taxi driver and the security guards of the community."

Fang Mu nodded.

After so many days of hard work, the police have a lot of evidence.

But the problem is that they can't be sure if it was Xu Mo who appeared that night.

First of all, all eyewitness accounts of the teenager they saw were almost identical.

He is about 1.85 meters tall, thin in size, wearing a black cap, a black mask, unable to see his appearance, wearing a black sweatshirt and carrying a black travel bag.

To be honest, if you dress like this at night, if you are not familiar with Xu Mo, you won't be able to recognize him at all.

Secondly, there is the question of time.

When they investigated Song Jiajia, they found that on the day of the 3rd, Xu Mo did not go to school, but took care of Song Jiajia in the hospital, until the door of the inpatient department was closed in the evening, and Xu Mo did not leave when the nurse on duty made his first round.

This is also evidenced by the surveillance of the hospital.

In other words, before ten o'clock in the evening of the 3rd, Xu Mo was in the hospital.

But the school will study at 9:55 p.m. next night.

According to eyewitnesses, Shen Jiayi left the school after class, and the time of departure was about 10:10.

This is also evidenced by the surveillance at the school gates.

If it was Xu Mo who showed up at the school gate, he would have to rush from the hospital to the school within fifteen minutes.

But the problem is that the hospital where Song Jiajia is located is half an hour's drive from Baiyin University, which is still without traffic jams.

So how did Xu Mo avoid the other party's gaze, evade the guards and surveillance, and rush to the school in fifteen minutes after the nurse's rounds?

At twelve o'clock in the evening, the nurse on duty did not see Xu Mo in the ward during the second round.

The corridor surveillance also did not capture Xu Mo leaving the ward and the hospital, so where did Xu Mo go?

Of course, the results all know that Xu Mo appeared at the scene of the crime.

The question is, how did Xu Mo leave the hospital without leaving the ward?

There was a heated discussion about this issue among the police.

The first thing that came to their mind was that Xu Mo might have left through the window.

But Song Jiajia's ward is on the sixth floor of the inpatient department.

The windows of the wards are still ajar, let alone through the windows, it is difficult to even peek out.

There is also no sign that the windows have been removed.

The possibility of Xu Mo leaving the hospital through the window is basically ruled out.

Secondly, they felt that the nurse on duty that night might have been mistaken during the first round.

But after many inquiries, the nurse on duty was sure that she was right.

She did see Xu Mo in the ward, and talked to Xu Mo, asking why Xu Mo didn't go home.

Xu Mo said that it was too late, so she wouldn't go back, she still felt at the time that Xu Mo was so good to his girlfriend, it was a pity.

This shows that Xu Mo was indeed in the ward at that time.

After thinking about it, they thought of another possibility.

Xu Mo tampered with the hospital surveillance through some means.

Others may not be able to do it, but Xu Mo can.

However, in order to do this, Xu Mo first had to enter the monitoring room, and then he had to take away the security guards on duty.

But the monitoring room of the hospital is on the basement floor, which is not found by ordinary people.

Even if you find it, you can't get in.

Although it is possible that Xu Mo used his identity as a detective to enter, according to the security guard on duty that night, Xu Mo did not enter the monitoring room that night and did not appear near the monitoring room.

As for the security guards, it is impossible to use the gap to sneak into the monitoring room.

There are two security guards in the monitoring room.

Most importantly, there are two monitoring points in the inpatient department, one on the basement level and one in the dean's office.

Even if Xu Mo could enter the monitoring room on the basement floor to modify the monitoring, it would be impossible for him to enter the dean's office.

At this point in the discussion and analysis, the matter is at an impasse.

Liu Tao scratched his head and said helplessly: "In this way, it was not Xu Mo who followed Chen Xuefeng and the others that night, but also others, otherwise it wouldn't make sense." ”

The others nodded their heads when they heard this.

Fang Mu said at this time: "There is another possibility. ”

"What?"

"It was not Xu Mo himself who stayed in the inpatient ward that night, but someone else."

"Others?"

As soon as these words came out, everyone was stunned.

Liu Tao asked directly: "You mean, Xu Mo was looking for other people to put on his own clothes on the night of the third and stay in the ward to take care of Song Jiajia?" ”

Fang Mu nodded.

Liu Tao thought for a while, and then asked: "If your hypothesis is true, and someone is indeed pretending to be Xu Mo, then how can you explain it when you talk to the nurse on duty at that time?" ”

"It's easy to do, such as imitating Xu Mo's speech, or using recordings, and the nurse on duty didn't see his face anyway." Fang Mu said.

Liu Tao thought about it for a while and felt that there was such a possibility.

But there are still problems that cannot be explained.

"Words can be explained, but how can the impostor disappear?"

"According to what you said, Xu Mo asked someone to pretend to be himself, the purpose of which was to kill people and leave an alibi, in this case, the impostor must stay in the ward all night, at least during the nurse's several ward rounds."

"The nurse's ward rounds are basically fixed, knowing that twelve o'clock is the second ward rounds, why isn't the impostor there?"

"And most importantly, how did the impostor leave the ward?"

Regarding Liu Tao's series of questions, Fang Mu was silent.

This is also where he can't figure it out the most.

Just when the two captains were deep in thought, a police officer couldn't help but say: "Is there a possibility that the nurse on duty lied and Xu Mo was not in the ward that night." ”