Yes, she had no motive or reason at all, Lin Fan forced herself to carefully observe the situation around Zheng Bin's body, and then recalled the incident again.

"Trust me!" Mixed with the coolness of the summer breeze, Xin Chen could only repeat this sentence constantly, and the cold gaze around her was about to exhaust her hope.

I've heard so many great truths, but I still can't live this life; I've read so many mystery novels, but I still can't save myself. There is no handsome owner at 221 Baker Street, no bloated passengers on the Orient Express, only poison everywhere, and endless darkness.

Listening to the shouts in his ears, Lin Fan suddenly remembered that there was a girl who once stood behind him and said with countless surprised glances, I believe you.

That phrase is his strength to be quiet and cool in this hot summer.

That sentence is his courage to challenge everything in this dark decay.

Maybe he will lose, but he is willing to gamble his life.

There was a noisy sound of footsteps behind him, and the follow-up case-handling personnel arrived one after another, Lin Fan crossed Wu Xing and Xu Dongqiang who were blocking in front, and gently leaned down in front of Zheng Bin's body to take a look: "Just based on what Sister Su saw, it is too arbitrary to conclude that Sister Chen poisoned Zheng Bin to death." He looked up, his eyes suddenly wide, as if trying to find something in the eyes of the three men.

"What are you doing, letting a hairy boy play a detective game at the scene of the crime?" Some of the officers who arrived in the rear shouted.

"Let him finish." Wu Xing and Xu Qiangdong each lit a cigarette and exhaled slowly.

"She's not a murderer," Lin Fan turned around, looked at the girl with silver eyes flashing, and stretched out his hand, "Motives aside, even the evidence left at the scene shows that Sister Chen is not a murderer." ”

Without waiting for the people present to speak, Lin Fan continued to speak: "Have you seen those fragments, have you seen any clues?" "It's nothing, it's a normal fragment." Someone in the rear said.

"Yes, the fragments are normal, but what if the fragments are restored, put them back together."

Hearing this, Su Lan stared at the fragments carefully for a while, ah, she suddenly realized something, if she was not reminded, it would be difficult to detect it only through the fragments for a while, but for the virtuous her, after a long time of careful observation, she could still find some clues, that is, she didn't have this style of cup at all!

"Sister Su's cups are all placed in the cabinet in the side corner of the kitchen, and I happened to help clean it up tonight, so I noticed that the cups are all of the same style, and the style is more special, but the broken one on the ground is not, it may be difficult to distinguish for a while, but the analysis of the physical evidence department will definitely come to this result." Lin Fan stared at Meng Xuebin, who was looking up on one side.

"Yes, I'm very familiar with the style of my cup, because this is the one I like very much, so I bought a set at a time, a total of 8, I just counted it, it's all there, and I don't feel like the one on the ground is my style." Su Lan nodded lightly to Lin Fan.

Based on the above reasoning, I suspect that this cup must have been brought in from the outside, so who brought it in?

First of all, I have to exclude Sister Chen, because Sister Chen has been with me all the time in the afternoon, and my notebook has to fit in her bag, so I have looked at her bag.

Secondly, Wu Xing, Xu Qiangdong, I think you two old men should come empty-handed, and in the summer, there is basically a short-sleeved shirt and a pair of pants, which is difficult to hide.

Finally, Meng Xuebin and Su Lan, I think you two should be able to prove to each other that the other party didn't bring a cup home today. ”

"Well, Lao Meng and I are at home today, and we haven't gone out." Su Lan took a step forward and nodded.

"Well, since everyone present has ruled out suspicion, and only the attacker remains, the next question is, maybe it would be easier for him to sneak in with an empty cup, so how could he bring a cup full of poisonous water? So I made a bold assumption, maybe there is no poison in the water? ”

"Ridiculous, it's a big joke that you say that there is no poison in the water, Zheng Bin obviously died of cyanide, chemicals, and things, look at the color of the skin and lips of the corpse, as well as the bitter almond smell in the mouth and nose, I have been doing criminal investigation for more than ten years, can I see it.?" Meng Xuebin said to Lin Fan.

"I'm not saying that he wasn't poisoned, I meant that the poison wasn't in the water, but on the top of the cup," Lin Fan made a cup shape with his left hand, and then pointed upwards with his right hand, "The mouth of the cup is here." ”

"Wait, you mean ......, ah, your assumption is very likely!" Wu Xing spat out a puff of cigarette, "Then the key now is how to verify it." ”

"There is a way," Lin Fan pointed to the fragments of the cup on the ground, "There will only be a small part of the poisonous, and most of them are not poisonous, it is easy to compare and verify." ”

"Yes, why didn't I think of it, this idea is okay, let the person in charge of the physical evidence investigation take it for testing." Wu Xing said to the group of people behind.

The evening breeze of the summer night blew, and Lin Fan paused and brushed up his thoughts.

"I conclude that the conclusion of my reasoning above is that the attacker sneaked in with a poisonous cup and possibly mineral water, and then he took the opportunity to pour the water into the cup and put it on the table in the study, after which he hid in a dark corner of the balcony of the study.

The above is only a possible scenario analysis, but the most important thing is, what is the purpose of his doing this?

I have the following two guesses: first, his purpose is to kill Zheng Bin, after all, Zheng Bin was born as a criminal police officer and has a strong physique, so he is afraid that he will not be able to hit a blow, so he has made two preparations, if there is no condition to kill with one blow, he will also try to knock him unconscious for a few minutes, so as to ensure that he can drink the poisonous cup when he wakes up looking for water to drink in the dark, after all, ordinary people will want to drink water as soon as they wake up after they wake up.

The basis for this judgment is that the first time Zheng Bin entered the study was "someone", indicating that he had discovered the other party in advance, so the attacker did not seize the opportunity to kill Zheng Bin and had to knock him unconscious.

But this plan is too risky and uncontrollable, and it is really not a wise choice.

So I have a second guess, the other party doesn't care if Zheng Bin enters the study at all, as long as the person who comes in at that time is his target, his real plan is to leave that glass of water, knock a person unconscious here, and then create darkness and lure some people away, but as long as one person drinks this glass of water and dies, then his plan will be successful, no matter who it is.

If the real plan of the attackers is the second, then the identity of the other party is about to come out, 613, kidnappers! Because the people here have only one thing in common, that is, they are all from the 613 investigation team, maybe the kidnappers want to create confusion and suspicion within the investigation team in order to delay the progress of the investigation, but unfortunately they are one step short and do not notice that the cup style of Sister Su's house is different. That's my analysis. ”

After saying this, Lin Fan breathed a long sigh of relief, he looked up at the starlight that suddenly broke through the clouds, swept towards everyone with his afterglow, and then clenched his fists hard, he made a move, so those who are hidden in the dark, roaring, struggling, how are you going to take it.