Oh......

Only then did Zhao Yu understand that the person who was in a coma in the back room was a dentist from the dental hospital. Sister Millie and the suspect had all come to the dentist's room not long ago, so ...... What's really going on here?

Oh......

Although Zhao Yu was still tracking the suspect, through some urgent thinking, he still came up with some clues.

He remembered that the dentist's coat was missing, wearing only the shirt and shorts underneath, and that he was unconscious in the back room of the treatment room, and the door of the back room was also closed!

So inferred...... Don't...... What does the suspect want to do to the doctor, but he happens to meet Sister Millie, so he kills people?

Wrong!

Wouldn't it be too troublesome to kill people and kill them, and then drag people to the roof and throw them down, would they? Besides, the doctor didn't die?

Could it be that this suspect is here for Sister Millie?

Sister Millie comes to see the dentist, and the suspect stuns the dentist in advance, and then pretends to be a dentist himself in order to kill Sister Millie......

Well...... Still not right!

If you have to kill someone, why don't you just kill them?

The murderer did this, which is a little unreasonable!

Alas!

Still don't want to, Zhao Yu thinks that as long as this suspect can be caught, everything will naturally be revealed!

So, he stopped guessing and began to concentrate on tracking down the suspect.

The suspect's smell spread downstairs, and it was obvious that he was going down the stairs, and since the smell along the way was very light, it meant that he should not be slow to go downstairs!

On the way downstairs, Zhao Yu met a nurse, who quickly revealed his identity and then told him about the dentist's coma.

Without waiting for the nurse to react, he continued to follow.

When he came to the corner of the first floor, the smell of the suspect was a little stronger, and Zhao Yu estimated that the suspect may have stopped here for a short time.

Sure enough, when Zhao Yu stopped to check, he found a doctor's white coat from the garbage bin in the corner!

Oh......

It seems that the suspect was indeed wearing the doctor's clothes, and when he came here, he had already taken off his white coat!

Hum!

I don't care what you wear, as long as you're good enough!

As he spoke, Zhao Yu deliberately sniffed hard, and soon found the whereabouts of the suspect.

The suspect walked down the hall to the gate of the dental hospital and swaggered out through the main entrance.

Depend on!

From knocking the doctor unconscious, changing clothes to kill people, to calmly leaving the hall, this suspect gave Zhao Yu a very professional feeling!

Oh, my God!

Zhao Yu pondered, could it be that this time I met a professional killer!?

The further down you go, the stronger this feeling becomes.

Because, when Zhao Yu chased out of the gate, he found that the smell of the suspect actually pointed to the place where Sister Millie fell!

Yes!?

This......

In Zhao Yu's impression, a professional killer is just a legend, although he has dabbled in a wide range of rivers and lakes in his previous life, he has never seen a real professional killer!

Although there are occasional cases of buying murders, those hired are not professional, either leaving evidence in a careless way, or they can't complete the task at all!

However, the person in front of him is obviously different, with a calm mentality and neat work, and he is obviously a veteran of murder. The reason why he still had to go around next to the deceased was most likely to confirm whether the target was killed or not, so that he could receive the reward for the killing!

If so, then ...... Sister Millie's death, apparently a well-planned murder?

Depend on!

Thinking of this, Zhao Yu wanted to catch the suspect quickly and see what this professional killer looked like?

Due to the large number of people watching the excitement, the smell is somewhat mixed. However, the system props are not covered, and even so, Zhao Yu can still clearly find the smell of the suspect.

Unexpectedly, the suspect has been here for a short time, and he is very close to Moqi.

It seems that since Moqi's body fell on the car and died with her eyes open, the killer seemed to want to confirm her death, so he stood so close.

In this case......

Zhao Yu glanced left and right, and he suddenly felt that this killer might not have gone far!

The killer scent lingered at the scene of death for two or three minutes, and finally headed out into the street. Zhao Yu traced the past and soon found that the suspect was heading east along the sidewalk.

Who knows, Zhao Yu just chased more than ten meters along the sidewalk, but suddenly found that something was not quite right there, and the smell suddenly stopped at a bus booth!

No way!

Zhao Yu looked up at the bus booth and found that there were six or seven people waiting for the bus.

That's right!

Zhao Yu's heart couldn't help but pound, that's right! The smell gathered here, that is, the suspect was among those waiting for the bus!

So...... Which one is it?

Zhao Yu looked at the bus booth with wide eyes, most of the six or seven people were women, and after excluding them, there were only three men left:

A tall young man with fair skin, a middle-aged man with slightly gray temples, and a student in a school uniform listening to headphones!

Students are not!

There were only two suspects left, the young man and the middle-aged man were standing very close, and Zhao Yu couldn't distinguish them by the smell.

Therefore, Zhao Yu decided to walk up to them and smell them carefully......

However, he only took two steps forward, but the middle-aged man suddenly raised his head and glanced at Zhao Yu.

That glance, although it was an understatement and seemed unintentional, but for a veteran like Zhao Yu who has been walking the rivers and lakes for many years, he could see the strangeness of that person's eyes at a glance!

Oh!?

It turned out to be him!

I don't know, is Zhao Yu's eyes too pressing, or some other reason, the middle-aged man has obviously noticed him, his eyes no longer dodge, but staring at Zhao Yu without blinking.

Zhao Yu instinctively stopped, and his eyes were also looking directly at the other party. I don't know if it's psychological or if he really has a sixth sense, Zhao Yu seems to see the murderous aura in the other party's eyes!

Just as the two looked at each other, the bus arrived, and with a bang, the door opened.

Zhao Yu was silently ready to erupt in his heart, and once this guy got in the car, he would immediately follow.

However, the middle-aged man did not get into the car, but still looked at Zhao Yu without blinking, as if waiting for Zhao Yu to move first.

Soon, when the young man next to him got on the bus, only the middle-aged man was left at the bus booth, but the suspect's smell did not change at all.

Therefore, Zhao Yu is already completely sure that the person in front of him is the real murderer!!

Thundered......

The bus left the bus stop with a loud sound.

In an instant, the middle-aged man put away his cold eyes at Zhao Yu, and smiled playfully at Zhao Yu, as if he was challenging Zhao Yu......!