First, we urgently searched the hospital for the usage, dosage, and inventory of atropine. Then, we urgently checked the injections and other equipment, but as before, we found nothing.

Since there is no abnormality in atropine in the hospital, it can only start with ward monitoring. Psychiatric medical centers, in addition to restrooms, are monitored in an all-round way, and are also militarized. Anyone, except nurses, who wants to enter a ward, must be registered, including doctors.

The content of the collection is from the beginning of Wang Cailing's investigation when she was admitted to the hospital to the present. If you use normal speed, you may not be able to read it in half a month, so we usually use four times the speed to browse when handling cases.

Halfway through it, suddenly, a sentence burst out of my mouth: "Stop!" Rewind! "I stared straight at the screen, my pupils shrunk! Because just now, a figure flashed on the screen, and that person looked very suspicious.

The surveillance rewinds and sees a man in a black trench coat, frozen in the frame. The man came out of Wang Cailing's ward, and because Wang Cailing's condition was serious, the hospital gave her a separate ward.

I looked at the man on the screen and asked the nurse in charge of registration, "Has this person registered?" ”

The little nurse hurriedly checked the registration records of entering and leaving Wang Cailing's ward that day, shook her head blankly, and gave a reply that disappointed me and surprised me: "There is no registration." ”

I seem to have found a breakthrough in this case! Looking at the man, I reversed the surveillance again. It turned out that there was no sign of the man entering or leaving the doorway. In other words, this man, probably someone from inside the hospital. Of course, it is not ruled out that he sneaked in from a place where the surveillance could not record.

Immediately, I asked, "Is there a place in the hospital where I can enter a ward without registration?" ”

After pondering for a moment, the dean finally confessed: "There is an internal passage, all of which are fingerprinted. The dean's face was ugly, especially when he said the fingerprint recognition.

I understand that this is most likely the work of someone inside the hospital! If that's the case, then that person isn't an ordinary insider.

I nodded, and went back to checking the internal passageways.

However, what surprised me was that the monitoring system of the internal passage was hacked, resulting in the monitoring on the 15th, all deleted.

Things are getting more and more complicated, and I can't help but wonder who Wang Jiumei is, who can make hackers dispatch, and Wang Cailing, who is absolutely inseparable from Wang Jiumei's death!

I didn't expect that a little working girl would have something to do with hackers.

I began to doubt her identity, but at the same time, I urgently contacted Xu Liang and told her about it. Soon, the technical section sent someone over to assist in the investigation.

It is said that they have been staying here for the last few days, deciphering the hackers' IPs 24 hours a day, and trying to restore the deleted content that was actually overwritten.

In the afternoon, Chen Fang called me and told me that there are too many hospitals and pharmacies in the city that allow the sale of atropine, and it is very troublesome to investigate, and it is initially estimated that it will take a week to complete the investigation.

I briefly told him about the situation here, and at the same time asked Wang Cailing about the autopsy. Chen Fang said that the forensic doctor is already conducting further tests, but the specific ones still have to wait for the report to come out.

At this point in the case, it is no longer as simple as investigation! Time is getting tighter and tighter, and every minute and second is a race against the murderer.

I was a little impatient, especially when I heard Wang Cailing's family members screaming hoarsely downstairs to kill people and pay for their lives. The feeling of being able to clearly feel the murderer running through me exploded in my mind for a moment.

I tried to calm myself down and start thinking about my next decision.

In my mind, I began to think about the clues I had investigated in the past few days: Wang Jiumei and her neighbors were like two people, the burned notes, threatening messages, mysterious folders, and the consultant who destroyed the scene of the first crime, as well as atropine, the mysterious man, and Chen Cheng's abnormality.

These clues are too simple, and they were found almost without much effort! All along, I have been led by the nose by the murderer, and these clues are like waiting for me to find them.

Just when I was in a mess, the forensic doctor came up with new results: preliminary identification showed that the atropine in Wang Cailing's body was three times the amount of injection in a month for seriously ill patients.

The toxin accumulation time is about 30-45 days.

In other words, as early as a month to a month and a half ago, Wang Cailing had already been injected with atropine.

The "ghost" mentioned by Wang Cailing may also be her hallucination, and her madness is also suspected to be caused by an overdose of atropine!

Who injected Wang Cailing with atropine? Is it really the man in black who appears in the surveillance?

The policeman's intuition made me suspect a person, Chen Cheng, a young man who had an argument with Wang Jiumei a month ago.

Without further ado, without any evidence, I once again came to the vicinity of Chen Cheng's house. However, he did not visit directly, but through the visit, he obtained Chen Chengjin's movements for a month.

According to the description of his neighbors, Chen Cheng is an honest man who does not leave the door every day, and relies on his parents to help him get by.

Seeing that nothing could be found, I went back to the police station.

The mind is a mess, and it takes time for all the identification results to be determined. But that would also be tantamount to giving the murderer time to erase all clues.

Suddenly, a thought came to my mind: Li Mao, who destroyed the scene of the first crime! He had drunk excessively the day before the crime, causing him to sabotage the scene of the crime.

After drinking alcohol, the body surface will retain the unique smell of alcohol, that is, those who were at the scene of the crime at the time can also know. Under normal circumstances, if the consultant is unconscious in the presence of another person, the escort will alert and report it.

I immediately called Chen Fang and asked who was there that day.

Chen Fang said that Li Mao was the only one at that time.

After a pause, he said, "Xu Liang asked you to go to Wang Jiumei's crime scene to check if there are any ashes burned by the note, and if so, maybe you can recover something." ”

I nodded, grabbed my coat, and headed towards the scene of Wang Jiumei's death.

The scene of the crime was the same as before, untouched.

As usual, I found the landlord, asked for the key to Wang Jiumei's room, and took photos in front of him, so that the landlord could watch me search.

Bookshelves, sinks, toilets, every corner, search while making sure the crime scene is not destroyed. I didn't even let go of the balcony, but I still didn't get anything.