Yan Zhi sighed and raised her eyes. Wei Huan felt a tightness in his heart for no reason. Yan Zhi has always been a joker of life, even when she testifies against the murderer, she rarely shows such a serious expression.

"Listen, although all this is my guess for the time being. But I know of a drug that can cause pinpoint pupil ..... when overdosed. The principle of preparation is not complicated, but it is not easy to refine to lethal purity. ”

"It's better not to have someone develop this kind of thing. But judging from last night's situation, we are all together, and we still have a genius after all. ”

Wei Huan didn't understand, "What the hell is it? Isn't it a good thing to save people with medicine, how can you say it, it seems to be terrible......

Yan Zhi shook her head, the usual smart look in her eyes dimmed, "It's three parts poisonous, and some are simply very poisonous." Do you still remember that before the old emperor returned to heaven, a missionary came to the sea country and offered a medicine called 'Wupu'?"

"The Emperor Returns to Heaven...... Three years ago, when you first entered the Criminal Department?"

Wei Huan never cared about those palace secrets, as well as those strange herbs, although Yan Zhi always said that it was also a necessary quality to catch fast, but really, when I heard her tirade, I had to get distracted,

"At that time, I hadn't come to Shangjing yet, how could I know these .....?"

"This medicine is extracted from opium poppy. Yan Zhi's eyes obviously hated iron and steel, "Three years ago, I asked Xie Tou to pay attention, this kind of thing is not fun." ”

"You know what kind of poison it is, and you still come to ask this madman?", anyway, no matter what kind of medicine, Wei Huan has never heard of it, he pouted into the wall, and said in surprise: "Are you teasing people?"

"Didn't I tell you that the current technology can't achieve lethal purity. I'm thinking that Pei Jingran may be right, the red-tailed dolphin did play an irreplaceable role in this case......"

Yan Zhi's voice gradually lowered, and Wei Huan didn't dare to interrupt. After a long time, she woke up from her contemplation and beckoned to herself, "Go back to the punishment department." ”

When solving the case, Wei Huan always felt that Yan Zhi was chattering from time to time, and she liked to point fingers at every turn.

However, no matter how much she babble, the answer is always not far off.

Regarding this, don't look at Yan Zhi as a woman, Wei Huan is still a little convinced.

However, he will never admit it outside. He is dignified and happy, and catching a thief is not as good as a girl. When others don't say it, the two elders in the family laugh off their big teeth first.

Speaking of the Criminal Department, there is another person who is convinced by Wei Huan.

At this moment, the man was sitting behind the desk he used to sit at in the lobby, frowning at the recitals on the desk. He hung a pen in his right hand, his lips were tightly pursed, and the lines in the center of his eyebrows formed a "Sichuan" character.

"Xie Tou'er!" Yan Zhi is in the Criminal Department, no matter what time she is, she is not up or down, and she is basically used to Xie Xixuan.

"Uh-huh......" Xie Xixuan heard it, but didn't look up, "What did Lao Chen say over there?"

"Poisoned. It's just that the source of the poison is a little troublesome. Yan Zhi's voice was still quite confident, and she paused, "Back then, I had to ask for a list of the skilled people who made and sold 'Wupu' with Xie Tou'er." ”

"Oh, what does it have to do with this?" Xie Xixuan sounded quite surprised, raised his head from the case, and glanced at Yan Zhi,

"I didn't expect this, I'll ask Director Lu to bring it to you later. Xie Xixuan is still an old man, at this moment, can he not be impatient, "Is there anything else?"

"Hmm..... How can you say it, Master Xie......" Yan Zhi put one hand into her hair, scratched her head fiercely, and squeezed out a smile that was more ugly than crying, "Little Shake Courage, can you ask you a few questions?"

Xie Xixuan didn't have any expression, but his body straightened almost imperceptibly, put down the pen, turned his hands up, and put on a gesture of please.

"I heard that the adults went to prison last night, what time was it?"

"Around the beginning of the hour. When I left the lobby, my husband had just finished the first shift. (Seven o'clock in the evening)" Xie Xixuan almost blurted out, estimating this question, when he was thinking about the case, he had already asked himself.

"How long have you been down, and for what purpose?"

"Less than an hour...... There were several convicts who had confessions but no evidence. If it is during the trial, it will be another turmoil if you listen to the direction of the wind and retract the confession. ”

Wei Huan was involved in the whole process of this case, and he knew that Lord Xie's worries were not unreasonable, and he should first get Lu Hanlin's three hundred taels of silver back.

"When you leave, everything is normal?"

"Actually, I just met a few of them in the torture cell......" Xie Xixuan folded his hands on his lips, and from Wei Huan's angle, he couldn't see his exact expression.

He seemed to recall carefully for a while, and shook his head, "When I came out, the prison secretary had just delivered soup and rice. Several of the prisoners who were arraigned were a little emotional. But they were all normal reactions, and I didn't see anything suspicious. ”

Yan Zhi nodded, seeming a little hesitant: "It's not just about those prisoners. What do you think of the rest of the people in the prison, my lord?"

Xie Xixuan glanced at the two of them, and his voice was slightly hesitant, "Last night, my mind was full of facts and criminals, and I didn't know about the cadres of the prison department. ”

"But, you know, there are some things that I can't interfere with. If you go down to investigate, you should put the facts of the case first. ”

Wei Huan roughly knew what Xie Xixuan was talking about, but Yan Zhi's temper, except for killing people, she would definitely take care of other things, when did she see it.

"The little ones know. Yan Zhi agreed with a hippie smile, "Last question, don't scold me." Do you have an alibi after last night, before midnight?"

"This is really not true, it was almost three watches (eleven o'clock in the evening) after the official business was done last night, and I slept in the guest room behind the criminal department. Xie Xixuan replied lightly, picked up the pen, and continued to consider his recital.

Yan Zhi glanced at Wei Huan, and the two quietly withdrew.

"Is there a problem with Xie Tou'er?" As soon as the two of them left Xie Xixuan's courtyard, Wei Huan asked eagerly.

"Xie Tou is a cautious and meticulous person, and many suspicions are not substantiated, and he will not tell me. Yan Zhi stared down at the green bricks on the ground, the sky was cloudy and rainy, and there was a layer of gloomy humidity under her feet.

This kind of person is the worst witness, and even if he does see something, the answer is lost in his subconscious screening. And we are at the stage where we don't know what questions to ask. ”

"You asked him for an alibi, but didn't suspect him?"

"Theoretically, everybody is to be skeptical. Yan Zhi stared at Wei Huan's eyes and shook her head slowly: "If you feel it is necessary, we can even exchange your alibi from last night, but I don't think that makes any sense." ”

"I'll go home and sleep when I send you back to the Criminal Department, and the second elder can testify. But if you think I'm doing a good job, and I go out in the middle of the night to kill people, my father and mother must not know, and I can't help it. ”

Wei Huan shrugged his shoulders and said that with his father's ears and eyes, he must have slaughtered him, a little rabbit cub who climbed over the wall in the middle of the night.

Yan Zhi nodded, and did not comment on Wei Huan's alibi, but took a shocking sentence: "Rigorous and meticulous, doing things repeatedly and carefully, this is also our profile of the murderer, do you remember?"

"You don't really think—"

"It's too early to say everything, if Xie Tou'er is the murderer, there will be too many things that don't make sense in this case......" Yan Zhi narrowed her eyes and looked into the distance, "Withdraw, Xie Tou'er won't have anything here anyway." ”

Yan Zhi didn't know if she hadn't slept enough, she was quite temperamental, so she glanced at him and strode out.

"If that's the case, then let's go back and rest. Anyway, if the case is solved, Xie Touer will die, if he doesn't solve it, he will still die. It's fun to go back. ”

"Are you really going back?" Wei Huan caught up in three steps and two steps and asked.

"What do you think!" Yan Zhi didn't raise her eyes, and said three words back: "Go to prison." ”

Yan Zhi is very familiar with this kind of look.

Because she had read from too many prisoners, victims' families, and key witnesses:

Contempt and disbelief, as if looking at a little female monkey who doesn't understand anything and jumps up and down.

At this moment, Lao Liu, who was imprisoned in prison, was looking at Yan Zhi with this kind of vision. He was born quite burly, probably because of the benefits of entering the prison company, and the fat on the side of his mouth hung down from the sides of his cheeks, and shook with the slightest movement.

If she is outside, Yan Zhi can show the waist card of the criminal department to deter those good people who have not seen the world. Few of them are extremely evil, but they simply look down on the female catcher.

Well, it's not that easy here.

Yan Zhi swept back her greasy face with an emotionless gaze, and sighed: "We don't need to pretend to like each other, but there are a few problems." If you answer truthfully, I'll disappear immediately, so much better. ”

"I don't know how to weigh this matter...... Lao Liu snorted in his nose, and his voice was heavy, "We have measured the amount of oil from the oil lamp...... When it burns to that extent, it is about the first moment of ugliness. ”

If the oil lamp had not been tampered with, then this should have been the time when the murderer left the prison. The first moment of ugliness - this kind of time, whether it is to find an alibi or eyewitness, it is difficult to reach the sky.

Yan Zhi had already guessed that this was the result, nodded and expressed her gratitude.

"By the way, we found this underneath a corpse. Lao Liu said, handing over a pale yellow bamboo tube, which is a fine bamboo that can be seen everywhere, no more than two feet long.

Yan Zhi took it and looked at the light, the middle was empty, there was no trace of processing, and the light blue color of the inside of the bamboo was still retained.

"Incense or the blowpipe of a poison needle?"

Lao Liu scratched his still hairy head, "We don't know much about the three things up and down the rivers and lakes." But there are prisoners in this prison who understand. According to them, it is indeed the blowpipe of the incense. ”

If you don't count the ashes that Su Huan found that were about to be burned, this bamboo pipe is the first solid physical evidence of this criminal prison mystery case. Yan Zhi carefully wrapped it up, but a strange sense of disharmony came to her heart.

It would certainly be easier to stab them to death by putting everyone to sleep with incense, but in the face of twenty-two helpless prisoners, what was the need to prepare two more poisons?

"Is there anything else you have to do?" Lao Liu glanced at Yan Zhi and saw that she hadn't spoken for a long time, very impatient.

"Did anyone come to this cell before the crime?"

"Master Xie came, but he didn't go in. The prisoners were all me and Secretary Feng who went to the prison and took them over, as well as Sun Yi, the little cub guarding the door. ”

Yan Zhi remembered the little jailer who looked like Sven and stammered yesterday, "The one who opened the door with you?"

"That's right, it's him. ”

"He's not here today? I'll have to talk to him again. ”

"The young man has never seen this, so I asked him to go back first. If you are looking for it, the paperwork should have a record of where his family lives. ”

Yan Zhi nodded, "Except for the four of you, there is no one else?"

A trace of hesitation flashed on Lao Liu's face, and he didn't answer immediately.

"There are some ways to get out of the way, and this is something that the entire Criminal Department knows. But now it's twenty-one lives, and I advise you to say it better. Wei Huan also advised.

"It's someone who came. But when she left, everyone else was fine. I vouch for it with my head, and it has nothing to do with this person. ”