Chapter 74 Half a Fingerprint
Chapter 74 Half a Fingerprint
At this moment, Zhou Shi pushed open the door of the office. After a day, the smell of blood inside was not as strong as at the beginning.
Because the case has not been concluded yet, there may still be some clues found at the crime scene, so no outsiders are allowed to approach the scene, and cleaning is naturally impossible.
"How can this be?"
After a while, Du Yu still couldn't accept this reality.
In addition to the [cleaner], there are other people involved in this case?
Zhou Shize thought of the phone call: "Do you remember He Yunke's last words?"
Du Yu asked: "What last words?"
Zhou Shi said, "The phone call that [the cleaner] made to Yiqing."
Du Yu remembered that at He Yunke's funeral, Xu Yiqing received a birthday greeting from the deceased.
At that time, He Yunke had a bellows sound in his throat, and it was obvious that he was injured and dying. Then the [Cleaner] forced him to help Xu Yiqing wish him a happy birthday. This made Zhou Shi feel cold on his back and very nauseous.
Although Xu Yiqing was also very shocked and his mind went blank at the time, he still calmly chose to record.
He retrieved the recording from his cell phone and played it.
The sound of He Yunke's death filled the corridor again.
"Don't, don't... cough, don't kill me! What happened back then had nothing to do with me. I was not a participant... It was the [Forensic Doctor], [Police] and [Butcher] who took the lead!"
Zhou Shi stretched out his finger and tapped lightly on Xu Yiqing's screen, causing the recording to play again.
"Did you hear that? What do you think the identities of the three people He Yunke mentioned are?"
Du Yu said: "Code name."
Zhou Shi nodded: "Since it is a code name, it means they are not real police officers and forensic doctors. They may be the murderer just like [Cleaner]. And... the code name [Butcher] always gives me a bad feeling. To be honest, it's just a woman's sixth sense."
The profession of cleaner has an obscure meaning abroad, specifically referring to professionals who help people do dirty work and deal with corpses.
"This job is very similar to what [Cleaner] does now." Du Yu thought: "Li Cheng was indeed a teacher, his code name is [Teacher]. And [Forensic Doctor] can really perform autopsies, he dissected Zou Yi's body. Although He Yunke is an executive of a pharmaceutical company, he is interested in art and can indeed sculpt, which is related to his code name [Sculptor]."
Xu Yiqing suddenly felt a little dazed, and then an idea popped up in his mind.
"This shows that these code names are related to their expertise."
"[The Butcher] doesn't sound like a good person."
"But this doesn't mean that the one who killed people is the [butcher]."
"Let's single out the murderer of Song Lang for now." Du Yu sighed, "Whether it's the Butcher or not, at least it's definitely not the Cleaner... I hope the Cleaner found an accomplice to poison Song Lang, but we all know that with her personality, she will either clean up after others or commit the crime alone. She will never allow the key steps to fall on others. In fact, she did it herself."
Zhou Shi also agreed. Just like Xu Yiqing's reasoning, the [Cleaner] had a perfect alibi:
She hid in here on Friday when people were coming and going in the administration building for the parent-teacher conference, and did not leave until Monday morning.
In the morning, the nightclub was closed, Song Lang was sleeping in the store, and Li Dusheng's men were also lazily cleaning up the mess from last night. Everyone had seen the nightclub's surveillance. Before the police went to the store, no suspicious women appeared in the nightclub, had access to the bar, and put the poisonous ice cubes into the ice bucket that Song Lang often used.
And if the [cleaner] had already completed the poisoning on Friday, it would be even more impossible.
It is the beginning of summer now, and a lot of ice is used in cocktails. The nightclub has replenished the ice twice. If it was poisonous, someone would have died long ago, and would not have waited until Monday afternoon.
Xu Yiqing received a call from Lin Sheng.
He said a few words, hung up the phone, and looked at the two people: "Asheng's further inspection report is out. Half of the ice cubes taken from the nightclub freezer were tested positive for aconitine and tetrodotoxin. It can be confirmed that the poison was put in the ice cubes." "Half? Is the total amount a lot?"
"The poisonous ice cubes weighed about one kilogram." Xu Yiqing recalled the samples sent for inspection: "All of them were small ice cubes of several centimeters, crushed ice, which is more likely to contain toxins."
One pound...
Du Yu frowned: "If the nightclub hadn't been closed, how many people would have died? This is already indiscriminate mass murder!"
This made them even more certain that, in addition to the [Cleaner], Jiangcheng now had another lunatic who didn't care about the consequences at all.
Putting aside other things, at least the cleaner's killing is logical and will not hurt innocent people. Whether it is Li Yueyue, Li Cheng and others or He Yunke, at least she took action because someone needed her help.
In order to ensure that Song Lang was killed, the person who poisoned him did not hesitate to poison any customers who might be consuming in the nightclub!
"Catch the cleaner first." Xu Yiqing said, "She knows the photo very well. If it was the person in the photo who did it, she must know something."
"We need to check all the parents who entered this building on Friday?" Du Yu thought for a moment and said, "Although the scale is a bit large, we can still screen them one by one."
The administrative building is very large. On Friday, the parent-teacher meeting was for the whole school. The first and second graders held their meetings in their respective classes. However, as they were about to face the high school entrance exam, the entire third grade was gathered in the conference hall on the first floor of the administrative building, which could accommodate nearly 10,000 people, to hold a swearing-in ceremony.
More than 2,000 teachers and students, as well as their parents, listened to the principal's passionate speech.
At that time, the [Cleaner] was hiding in the encouraged crowd below, watching him silently, waiting to hide in the administrative building after the show was over!
Zhou Shi said, "Maybe... we can greatly reduce the scope of the screening. Think about it, [the cleaner] came out of the office on Monday. She definitely wouldn't hide in the building and wait for us police officers to leave before escaping. That would be too much of an uncertainty factor. She wouldn't dare to bet that we wouldn't search the building."
How did the cleaner leave?
All the parents who were present at the scene that day were stopped by the police. Their identities were verified one by one to make sure they did not meet the characteristics of a "cleaner" before they were released. Their ID numbers were also recorded in case they were recalled at any time.
Du Yu said: "He left after the guard called the police but before the police arrived?"
There is such a possibility, but it is very small.
In addition to parents, there are also...
Xu Yiqing realized: "It's a student!"
Zhou Shi smiled, "Yes, it was a student! After the [Cleaner] lurked in the administration building, he prepared a spare set of school uniforms. After killing the principal, he changed into the No. 4 Middle School uniform in the office, and then took advantage of the chaos to blend in with the students on duty. He was dispersed by the police... At that time, there were only parents, students and police in the building. He couldn't disguise himself as a policeman, right? Colleagues all know each other, and an extra stranger can be seen. But students are different. The students on duty are from different classes, so it's understandable if they are unfamiliar, plus the shock of the death at that time."
"Does the age match?"
"Students nowadays mature earlier, and [cleaners] have a certain ability to disguise themselves... After all, some actors are in their 30s or 40s, and they can still play students."
Zhou Shi said: "The cleaner is very careful about anti-detection capabilities and would not leave any fingerprint clues in the past. But I think if she disguised herself as a student this time, she would not be able to wear gloves... I guess her fingerprints can be found in the hygiene tools used by the students on duty that day!"
Upon hearing this, Du Yu took immediate action and asked the police to ask the school leaders for information about the classes on duty. Finally, he locked on one class in each of the three grades and entered the fingerprints of all their students and teachers. Then the police from the Investigation Department also extracted the fingerprints from the hygiene tools for comparison.
There are nearly two hundred teachers in three classes, and each of them needs ten fingerprints, which is a huge project.
And after a day, there are many new fingerprints on the hygiene tools.
However, even so, the Investigation Department still had good news late at night -
On a broom, a half-fingerprint was extracted that did not belong to any student or teacher!
(End of this chapter)