"Hong Xi, your idea is indeed amazing, but I'm sorry to tell you that your idea is not valid! Because I found no traces of snake bites on Liao Bang's body!" Lan Ru said with a smile.
"Alas! My brain cells were blinded in vain!" Hong Xi looked disappointed.
"Sister Lan, how toxic is this snake venom? Will a person who is poisoned by this kind of poison usually die immediately or will it wait for a period of time before it attacks?" Han Cheng then asked Lan Ru.
"This kind of snake venom is one of the most toxic among many snake venoms. Generally, people will die within three minutes without any first aid measures after being poisoned by this kind of snake venom!"
"This kind of snake venom is so poisonous, so it seems that Zhang Ya still has the time to commit the crime!" Chi Shen said.
"Then if Liao Bang only ate a trace amount of snake venom, would it delay the attack?" Han Cheng said.
"This is possible! However, generally after being poisoned by this kind of poison, even if it is a trace amount, the poisoned person will usually have symptoms within half an hour after being poisoned, such as stomachache, vomiting, etc."
........
In the end, after everyone's discussion and analysis, everyone still felt that Zhang Ya was the most likely murderer!
But they had already investigated and interrogated Zhang Ya.
Zhang Ya had no motive for killing.
This again confused everyone.
The case investigation reached this point and hit a bottleneck again.
After Han Cheng returned to the apartment, he lay on the bed and closed his eyes, replaying every aspect of the entire case in his mind as if he was watching a movie.
Suddenly he remembered a suspense novel "The Redemption of the Saint" that he had read some time ago.
That novel tells the story of a housewife who planned an incredible poisoning plan to kill her cheating husband.
Although the housewife in the novel was not at the scene of the murder, she made her husband drink poison through various carefully designed coincidences, and eventually died of the poison.
Han Cheng was suddenly enlightened.
He had previously focused his investigation on suspects who had appeared at the crime scene, but had not thought about investigating suspects who had not appeared at the crime scene.
If the murderer planned the poisoning thousands of miles away like the housewife in the novel, then no matter how much he investigates the people present at the crime scene, he will never find the murderer!
However, if the murderer poisoned outside the crime scene, how did he poison him?
In Room 303, Lan Ru tested the water and wine that Liao Bang drank and found no snake venom.
Although he could not think of the murderer's method of poisoning for the time being, Han Cheng decided to change the direction of the investigation and focus on the people who hated Liao Bang.
Who hates Liao Bang the most and wants him to die the most?
In addition to the suspects Ke Lu, Ai Chao, and Zhang Ya who appeared at the crime scene.
There is also Liao Bang's wife who was not present at the crime scene.
Although she claimed that she was numb to marriage and had no hope for Liao Bang, could she be like the housewife in the novel, who actually hated Liao Bang so much that she had murderous intentions and planned the murder? ?
It's totally possible!
In addition to the above four people, there is another person who cannot be ignored, and that is Zhang Ya's husband, Cao Qian.
Zhang Ya has taken Liao Bang home many times to fool around. Will he notice anything unusual about his wife?
Could it be that he discovered his wife's affair and planned the murder to eliminate the adulterer?
In view of the fact that both Liao Bang’s wife and Zhang Ya’s husband are suspected.
Therefore, Han Cheng decided to shift the focus of the subsequent investigation to the two of them.
Liao Bang's wife, Han Cheng and the others had already been in contact with her before.
Only Zhang Ya's husband Cao Qian and Han Cheng have never had formal contact with them.
In order not to alert the enemy, Han Cheng met Cao Qian in the name of sending Zhang Ya home.
After Han Cheng and Hong Xi sent Zhang Ya home, Cao Qian happened to be at home.
As soon as she entered the house, Zhang Ya confessed to Cao Qian in tears about her affair with Liao Bang.
Han Cheng and Hong Xi thought that Cao Qian would be furious when he found out that his wife had cuckolded him.
Unexpectedly, Cao Qian not only did not blame Zhang Ya, but also comforted Zhang Ya, blaming himself that he had not cared enough about Zhang Ya before, which made Zhang Ya make a mistake.
"It seems that Zhang Ya said her husband was a good man, and he was right. His wife cheated on him, and he could forgive her so easily. He is such a good husband in the Dragon Kingdom!" Hong Xi whispered to Han Cheng.
Soon, Zhang Ya and Cao Qian reconciled as before.
"The two police officers laughed. Thank you for sending Zhang Ya back!" Cao Qian came over and said to Han Cheng and Hong Xi who were standing in the living room.
"You're welcome! It's just a little effort!" Hong Xi said.
"I won't send those two police officers away..."
Cao Qian's words seemed to mean that he was expelling guests.
Although Han Cheng knew that Cao Qian wanted to expel the guests, he had no intention of leaving.
Cao Qian's behavior of expelling guests made Han Cheng feel that Cao Qian seemed a little afraid of what he would find in the house.
Han Cheng pretended not to hear what Cao Qian said, walked to a corner of the living room, looked at a lizard in a glass cabinet and said, "Mr. Cao, do you like to raise cold-blooded animals?"
"Just keep it for fun!" Cao Qian said lightly.
"I wonder if Mr. Cao likes raising snakes?"
"Snakes? I don't like raising them! I hate snakes the most!" Cao Qian shook his head.
However, Han Cheng judged from Cao Qian's expression that he was lying.
Han Cheng secretly thought, this is just a simple question. Why did Cao Qian lie to him? Could it be that he had something hidden in his heart?
Han Cheng became alert.
He carefully observed the entire living room.
Suddenly, he noticed that there seemed to be a faint red light emitting from the top shelf of the bookshelf in the living room.
Han Cheng was wondering if there might be some secret camera equipment hidden there?
To find out what's in it.
Han Cheng deliberately walked to the bookshelf and said, "Mr. Cao, you have quite a collection of books here. It seems that you like reading very much!"
"The name of this book "The Redemption of the Saint" is quite special. I wonder what kind of book it is?"
Han Cheng deliberately pulled out the book "The Redemption of the Saint" from the bookshelf.
"It should be a novel. It's been a long time since I bought it and I haven't had time to read it!"
Cao Qian's expression was calm, but Han Cheng judged that he was lying through elementary lie detection skills.
What is he guilty of?
Han Cheng felt more and more suspicious of Cao Qian.
