The wire in the wall can suffocate a person, but it is absolutely impossible to strangle a person's neck to the extent that a dead person is, and punches and kicks can cause bruises all over the body, but it is impossible to cause marks on the chest.

In this case, there is one more important point.

The suspect Xiong Wei is just a person who has not graduated from junior high school, how could he know how to use such a chemical as Bill hydroxy hemlock, which is not usually common.

With just the right concentration and knowing how to use the corrosive properties of this chemical to disrupt the police's sight, this matter is certainly not something he can get out of, so who will it be?

Suddenly, Qiu Lan thought of someone.

He had been following the Scarface man, and the conversation between the two of them had confirmed that the man knew about the deceased while in the old factory.

"Officer Xu, have you checked the man who looks a little more handsome?" Qiu Lan raised her eyes and stared at the person in front of her seriously, her tone calm.

"I found out, just after interrogating Xiong Wei, I was about to interrogate him. Xu Chengyan nodded, pursing his lips lightly, "That person's name is Shen Chenhua, and he has been with Xiong Wei for almost three years, and they are all drug traffickers. ”

Qiu Lan, who had a serious face, lowered her eyes, and silently thought about the whole thing in her heart.

Followed for three years?

For such a long time, the relationship between the two should be not bad, and Xiong Wei should still trust him very much.

"Doctor Qiu, what are you thinking?" Xu Chengyan looked at her contemplative appearance, couldn't help but move his lips, and asked softly.

"I'm just thinking that the mystery of this case hasn't been resolved. Qiu Lan frowned, glanced at Xu Chengyan thoughtfully, and her eyes flowed.

She told him all the doubts in her heart, and after listening, Xu Chengyan nodded approvingly, and the expression on her face became a little colder.

During the interrogation, that Xiong Wei was obviously a typical ruffian hooligan, superficial and irritable, impulsive and stupid, and in that case, from the very beginning, they felt the pressure and concluded that the murderer was a thoughtful and high-IQ criminal.

Xiong Wei, who was sitting in the interrogation room at this moment, really didn't look like a well-planned person, and besides, during the entire interrogation, he didn't mention anything about chemicals, nor did he mention the scars on his chest.

Could it be that he still has reservations?

But murder and drug trafficking were enough to sentence him to death, so what else could he not say?

No, he may be shielding someone, or maybe there is something else behind it, something he doesn't know.

The serious crime team checked Xiong Wei's information in the archives department, he has no father, no mother, no children, no daughter, and no wife, but occasionally goes to a certain street to do illegal things, but there is no fixed concubine.

Then it can only be the second possibility, that is, there are other things he doesn't know, and in addition to a few younger brothers who have been with him for so many years, there is only Shen Chenhua, who lives with him in the factory.

"Officer Xu, do you have any information about that person? Qiu Lan lowered her eyes, her red lips pursed lightly, and her eyes were full of deep meaning.

In the monitoring room of the interrogation room, Qiu Lan got the information handed over by the serious crime team, and Pei Pei and the others also brought another key person to the interrogation room.

Compared with Xiong Wei, Shen Chenhua was much calmer.

He pursed his thick lips lightly, his brow furrowed, his eyes calm, and the expression on his face was unwavering, as if what had happened before had nothing to do with him.

"Shen Chenhua, do you know the reason why we brought you here today?" Xu Chengyan sat on the chair without changing his face, leaned back, and deliberately made a relaxed posture.

"You know, I, I helped Viagra today and did something bad, but it's not something I want. Shen Chenhua lowered his eyes, his eyes rolling, "Actually, I was forced, if I didn't help Viagra, he would beat me." ”

"It's just, like that day. ”

"That day?" Xu Chengyan raised his eyebrows, his sharp gaze kept on him, "What did you say about the day Xiong Wei killed the deceased Tan Yinsheng?"

After hearing his question, Shen Chenhua frowned, hesitated for a moment, and nodded stupidly, "Yes, that day." ”

His voice trembled a little as he replied, as if he was afraid of the scar-faced man.

Looking at his expression, Qiu Lan furrowed her brows, and a trace of doubt slipped through her deep black eyes.

At that time when the factory was broken, Shen Chenhua was not afraid of Xiong Wei, but the man with the scar on his face had been asking for his opinion, and the relationship between the two was a bit like a brother.

So here, how could he have such an expression and admit that incident as soon as he came?

A huge question was in Qiu Lan's mind, but after she finished reading Shen Chenhua's information, some things quietly became clear.

"Shen Chenhua, when Xiong Wei was killing the person, were you beside you? or an accomplice?" Xu Chengyan stared coldly at the person in front of him, and his tone was cold.

But the white-faced boy didn't seem to be frightened by his attitude, the expression on his face was as calm as water, and even said that this composure was a little unusual.

"No, officer, I wasn't there at the time, I only saw it later, and Viagra threatened me and didn't let me say it, I didn't dare. Shen Chenhua twisted the thick eyebrows on his forehead, his eyes were lowered, and he looked helpless and cowardly.

"Officer, you believe me, Tan Yin's life and death have nothing to do with me, I am innocent. ”

"Innocent? I don't think you're very innocent, right?" Xu Chengyan picked up the information in his hand and put it in front of him, "You have been under Xiong Wei for three years, and you have been sitting in the drug trafficking business, you say you are innocent?"

Looking at the information on the table, Shen Chenhua's mouth opened wide in shock, "This, what is this?" ”

He pursed his lips, his eyes were misty, and he looked dazed and ignorant, "Officer, this, I don't know, I don't know that viagra still does these businesses, I really don't know." ”

"When I came here, I didn't have a place to live, I didn't have a job, it was Viagra who took me in and found me a job, and I'm still working as a chef at Sunshine Restaurant, I really don't know. ”

If Qiu Lan hadn't seen his words and deeds in front of Xiong Wei with her own eyes, maybe she would have really been deceived by his innocent performance in the interrogation room.

At this moment, the door of the monitoring room was gently pushed open, and Cao Fan from the forensic department walked in with the information they had identified overnight and told them the results.

The truth is finally emerging.

However, the evidence is not enough to convict, and it may take a lot of effort to get the real murderer to admit his guilt.

Qiu Lan took a deep breath, walked out of the monitoring room, stood in front of the door of the interrogation room and knocked lightly.

"Come in. ”

She calmly pushed open the door, a smile tugging at the corner of her mouth.

This smile is meaningful.

"Officer Xu, I have a few questions, I want to ask Shen Chenhua, can you give me a few minutes?"

"Yes. Xu Chengyan nodded, walked to the side silently, and gave her the place.

Qiu Lan, who had a calm face, put the information in her hand on the table in the interrogation room, then walked to Shen Chenhua's side and said indifferently, "The winner of the special prize of the National Chemistry Competition, a graduate student of the Department of Chemistry of Hengcheng University. ”

"I have to say, you've really done a lot in the chemistry neighborhood. ”