Li Shuhan called Fang Yu into the car and immediately turned around and drove towards the city center.

While driving, Li Shuhan explained to Fang Yu the reason why he was so anxious to find him.

It turned out that after yesterday's case was handed over to the criminal investigation department of the higher authorities, the higher authorities also attached great importance to this strange case of food murder, and immediately organized special personnel to surprise interrogate Li Xiulian.

The details of the crime confessed by Li Xiulian are very consistent with the scene, and although the autopsy results of the victim Zhen Panpan have not yet come out, the police officers who participated in the interrogation have basically determined that Li Xiulian is the most suspicious.

And Li Shuhan listened to Fang Yu's explanation of food restraint, and out of a sense of responsibility as a policeman, she recklessly ran to the criminal investigation department of the district bureau to explain the relevant speculations and reasons.

When Fang Yu heard this, he immediately knew about the follow-up development, the Criminal Investigation Department handled the case, and you were the acting director of the police station.

If you are wrong, you must not be accused of interfering beyond your authority and interfering with normal criminal investigation work.

If you happen to be right, then it's even worse, the criminal investigation department with the superior is all eating dry food, and you want you to teach them how to do things.

Li Shuhan listened to Fang Yu's analysis, and suddenly realized why he went to tell them this clue overnight last night, and the head of the criminal investigation section of the sub-bureau not only thanked him, but also said with a thorn in his words.

Fang Yu couldn't help but shake his head and smile bitterly, Li Shuhan's emotional intelligence was not even as good as herself, a college student who had only graduated for more than a year, and she really didn't know how she would survive in this well-behaved environment in the future.

Li Shuhan didn't care, she continued to tell Fang Yu about the development of the next things.

Although the people in the sub-bureau were suspicious of the clues provided by Li Shuhan, for insurance reasons, they expanded the scope of suspects a bit, and soon discovered some abnormalities.

The first is that the victim Zhen Panpan's son Zhen Dan's performance is abnormal.

He was reticent and indifferent to everything, and even when questioned by the police, he had to ask several times before he would answer a few words.

At first, everyone thought that it might be that his father's sudden death in front of him hit him too hard, and he was unwilling to accept the reality, so he became a little traumatized.

But the strange thing is that when talking about Zhen Panpan's death in front of him, he didn't show any sad expression.

What's even more puzzling is that when he heard that Annette Lee might be the murderer of his father, he didn't show any anger or other reaction.

Of course, these are not enough to explain anything, the point is that a teacup was also found at the scene of the incident.

There was some leftover water and a bit of vomit in the teacup.

After repeated questioning by the police, Zhen Dan said something intermittently.

He slept until the second half of the night, when he was awakened by his father's cry of pain, and poured water for his father to drink. Halfway through drinking, my father vomited violently and stopped moving after a painful struggle.

When asked why he didn't take his father to the hospital, he didn't say anything.

The police officer who handled the case immediately felt that there must be something wrong with these abnormal behaviors, and immediately sent the contents of the teacup for testing.

This morning, the test report came out that the original solution in the cup contained a large amount of vitamin C, and the vomit contained excessive trivalent arsenic, that is, arsenic.

When the police interrogated Li Xiulian before, Li Xiulian confessed that there were a total of five dishes for Zhen Panpan for dinner that night, namely braised dog meat, fried eel with tempeh, shrimp with chili and scallion oil, cold fungus, and fried spinach.

According to the record on the food map found in Li Xiulian's house, taking a large amount of vitamin C after eating shrimp can cause arsenic poisoning.

That Zhen Dan knew that Zhen Panpan had eaten a lot of shrimp at night, and fed his father a large amount of water containing vitamin C, which was very terrifying.

However, after Li Shuhan, who had been paying attention to this case, learned about the progress of the case, he went to the Criminal Investigation Department of the sub-bureau to repeat Fang Yu's words about shrimp and vitamin C.

At this time, the chief of the Criminal Investigation Department of the sub-bureau was angry and directly asked Li Shuhan whether dog meat and eel were poisonous when eaten together, which could not be verified at present, but the victim's vomit was indeed found to exceed the standard of trivalent arsenic, what is the explanation for this.

Li Shuhan only believed Fang Yu's words with one mind, and the specific reasons were clearly stated there.

The chief of the criminal investigation section seized the opportunity to seize this point and asked Li Shuhan not to meddle in this case again, otherwise he would report directly to the top and say that she had sabotaged the investigation of the case.

Li Shuhan felt that he was doing the right thing, it was the section chief's chicken belly, so he quarreled with the section chief and provoked the leader of the sub-bureau.

The leader of the sub-bureau knew that there was someone above Li Shuhan, on the one hand, he was a little unhappy that she was meddling in things outside her authority, and on the other hand, in order to protect her, he beat her with words, hoping that she would retreat in the face of difficulties.

But unexpectedly, the angry Li Shuhan failed to understand the meaning of the sub-bureau leader, thinking that people were biased towards his subordinates, and his mind was hot, so he actually made a military order, asking her to handle the case and guarantee that the case would be solved in three days.

At this time, the leader of the sub-bureau was also a little unbearable, and decided to make this little girl who didn't know the rules suffer a little, so he agreed.

When this matter became a foregone conclusion, Li Shuhan knew that he was reckless, and after a few turns, he was greeted by the cold face of the criminal investigators of the sub-bureau, and he didn't know how to start.

When he was helpless, the first thing he thought of was to come to Fang Yu for help.

After saying this, Li Shuhan flashed her big eyes and looked at Fang Yu expectantly, waiting for his answer.

Fang Yu's helpless Li Shuhan said: "If I knew it, I wouldn't have gotten into your car, and I couldn't get off the thief ship." ”

Li Shuhan smiled: "This is a police car, not a thief ship, it's very safe, you can honestly mess with your sister during this time." ”

Fang Yu sighed: "Can you please look ahead when you say this, there is a car coming." I don't feel safe at all in the car you drive. ”

Li Shuhan turned his head to avoid the interchange car in front of him, stuck out his tongue, and concentrated on driving.

Fang Yu stopped talking and began to think about the case. Although he was unwilling, even if he was invited by the previous person, he still had to help with Li Shuhan's matter.

There are many suspicious points in this case, and the murderous methods of the two suspects, Li Xiulian and Zhen Dan, are actually related to the food table.

According to Li Shuhan, after Li Xiulian had murderous intentions towards her husband, she happened to pick up the picture when she was taking out the garbage.

After picking it up, Annette Li kept hiding the picture and didn't let others see it.

If this is the case, then how did Zhen Dan know that the combination of shrimp and vitamin C can be poisonous?

Also, if Li Xiulian wants to kill Zhen Panpan because of long-term abuse and protection of her daughter, then what is Zhen Dan's motive for wanting to kill her father?

In addition, Fang Yu is very sure that it is impossible to produce excessive amounts of trivalent arsenic when shrimp and vitamin C are eaten together. So if the test results are correct, where did the trivalent arsenic in Zhen Panpan's vomit come from?

Fang Yu instinctively felt that there was an invisible line running through the entire case behind all this, but he didn't know where the thread was.

The sub-bureau finally arrived, and Li Shuhan took Fang Yu, who was still thinking, to the Criminal Investigation Department.

Fang Yu saw that the policemen in the Criminal Investigation Department were not kind to him and Li Shuhan's arrival, and he chuckled in his heart.

Don't think about it, it must have been Li Shuhan who said something brainless before that offended everyone.

Fang Yu sighed, hoping that he was not facing a god-like opponent.