When Han Bin was talking to Liu Rong, he had been paying attention to her expression. Liu Rong didn't show any emotional fluctuations, and her mood was relatively stable.
If Liu Rong was really the Rong Rong that Xiao Bingtian mentioned, then the relationship between the two must be very deep. If Liu Rong was the murderer, it was impossible for her to say it so casually.
Moreover, Liu Rong was older than Xiao Bingtian. In addition, Xiao Bingtian looked relatively young. The two's appearance was nearly ten years apart. At least in Han Bin's opinion, Liu Rong wasn't worthy of Xiao Bingtian.
Of course, Han Bin's opinion was somewhat subjective. After all, he had only seen Liu Rong now. He hadn't seen Liu Rong when she was young. Maybe Liu Rong was more beautiful when she was young. Many men liked mature women.
In general, Liu Rong's suspicion wasn't great, but there was one thing that Han Bin couldn't figure out. Although the deceased died not long after being seriously injured by a knife, life in reality was different from a game. It wouldn't disappear immediately. Even if the injury was serious, it could persist for a period of time, long enough to call for help. This was in line with the characteristics of a person before death.
But Liu Rong, who lived upstairs, claimed that she didn't hear any abnormal sounds.
Assuming what Liu Rong said was true, then after Xiao Bingtian was seriously injured, the suspect should have gagged his mouth, so he couldn't call for help.
If the suspect gagged Xiao Bingtian, Xiao Bingtian must have resisted, and the struggle before death would have been very fierce. There must have been some resistance wounds on his body.
According to the forensic doctor, Li Can, except for the fatal wound on his chest, there were no other wounds on Xiao Bingtian's body, and there were no traces of being tied up. That was to say, when Xiao Bingtian was awake, this hypothesis couldn't be established.
There was another situation. Xiao Bingtian was in a coma. Even if he suffered a fatal attack, he couldn't call for help. This situation was established. To prove this, the forensic doctor needed to provide more tangible evidence in the autopsy later.
This was material evidence. There was a faster way, which was to ask other neighbors if they heard the cry for help yesterday. If other neighbors didn't hear any abnormal sounds, it proved that Liu Rong didn't lie.
Han Bin went downstairs, and the technical department had also completed the scene investigation.
Ma Xiwen said, "The scene has just been investigated. We are ready to leave."
"What did you find?"
"We found a sharp knife at the scene. The blade is about ten centimeters long. It should be an ordinary fruit knife, but the quality of the knife is not bad and very sharp. Judging from the situation at the scene and the wounds on the corpses, it was very likely to be a murder weapon.
In addition, we found a broken cup in the kitchen. We collected the glass shards, and I saw some incomplete fingerprints on the broken glass. I was going to take it back to the lab to see if we could restore the fingerprints.
You should have also noticed another discovery. We found a set of bloody footprints at the scene. We have collected the footprints and will send them to your office after sorting them out.
Also, the situation at the scene feels a little chaotic. I'm not sure if this is the primary crime scene. "
Han Bin nodded. "After I checked the scene just now, I also felt that there was something wrong with the scene. Judging from the amount of blood, this should be the first scene. I'm more inclined to believe that the victim moved after being injured. As for whether he moved on his own or was dragged by the suspect, we don't know yet. "
Ma Xiwen said, "It is also possible."
"Did you find the victim's phone?"
"No."
"Did you find a picture of a young lady? The victim might have carried it with her, and this picture should be quite old."
Ma Xiwen shook his head. "No, but there are some old photos in the bedroom. You can take a look."
"Okay, you guys go back first. I'll go in and take a look." Han Bin clapped his hands and ordered a few of his team members. "Those who have nothing to do, help me collect the photos in the house."
"Yes."
Ever since he became the squadron leader, Han Bin rarely did this kind of basic work by himself.
At that moment, Wang Xiao came back with his men and reported, "Captain Han, I brought some people to make statements for the other neighbors who came to the crime scene."
"What did you find?"
"Although they have lived in this community for many years, they are not familiar with the victim, nor have they approached the body. They didn't find anything suspicious."
"During the time of the crime, did they hear the victim calling for help?"
Wang Xiao said, "No, I'm also wondering about this. Although the victim was seriously injured, it was impossible for him to die immediately. It stands to reason that he should have called for help, but none of the neighbors heard any abnormal sounds."
Han Bin touched his chin. "Let's wait for the autopsy results from Medical Examiner Li."
Based on the current situation, when Xiao Bingtian was injured, it was likely that he had lost the ability to call for help. Since there were no resistance injuries, and he was not tied up, it meant that the victim was most likely immobilized by drugs.
Zhao Ming walked over. "Captain Han, I've collected all the photos of the master bedroom."
Han Bin took the photos and began to flip through them. At the same time, he recalled the photo he saw on the high-speed train. The size, style, and appearance.
Han Bin flipped through the photos twice, but he couldn't find the photo Xiao Bingtian had seen on the train.
Han Bin suddenly realized that he had neglected a problem. He should have asked Liu Rong for a photo of her when she was younger.
Then, he rejected the idea. If Liu Rong was the murderer, she would definitely not take out Xiao Bingtian's treasured photo.
Han Bin only remembered the size of the photo, and he only knew that it was a photo of a woman. Due to the angle, he couldn't see the woman's face clearly. Even if Liu Rong took out a photo of herself when she was younger, Han Bin couldn't tell the difference.
Han Bin continued to look through the photos, and soon, he finished looking through all the photos his team members had collected. However, he couldn't find the same photo in his memory.
Han Bin didn't give up. Although he couldn't find the photo that Xiao Bingtian carried with him, Xiao Bingtian might not only have one photo of the woman. There could be other photos of the woman hidden in these photos.
Han Bin called Zhao Ming over. "I'll assign you a task. Find out the identity of all the women in these photos."
Zhao Ming showed a hint of bitterness. "Captain Han, there are a lot of old photos here. They've been there for decades, and their appearances have long changed. How am I supposed to find them?"
"That's your problem. Think of a way yourself."
After assigning the task, Han Bin continued to observe the situation in the house. He used criminal psychology analysis to reconstruct the incident.
Han Bin summarized all the clues and evidence. He still felt that the possibility of an acquaintance committing the crime was relatively high, but there were some abnormalities in some details.
For example, the glass broke in the kitchen. It should be that the suspect wanted to clean the glass to leave DNA and fingerprints on it. At first, Han Bin thought that it broke after cleaning, but when the technical department investigated the scene just now, Ma Xiwen found fingerprints on the glass, which meant that it should have been broken before cleaning the glass.
Breaking it didn't mean that the DNA and fingerprints would disappear. It was reasonable to say that the murderer should collect the glass fragments and take them away so that he could destroy his own evidence. However, the suspect left the glass fragments at the scene, which was somewhat unreasonable.
Of course, if the suspect was in a hurry and was worried about being discovered by others, it was possible that he didn't have time to clean up the broken glass on the ground.
However, the crime happened the second day after the victim's death. It was reasonable to say that the murderer had enough time to escape. Unless, there were external reasons or people who interfered and scared the suspect at the time.
Another point was that the murderer took away the victim's phone, which meant that there might be something important on the victim's phone. However, the tool used to commit the crime was equally important. When the suspect took away the phone, he didn't take away the knife.
Han Bin slapped his forehead and thought of another clue. There was only one knife found in the victim's house, and this knife might have been used by the victim to peel an apple. It could also be the murder weapon used to kill the victim.
Then the question was, did the murderer bring other murder weapons to the victim's house, or was it just a spur of the moment idea? The two had a fierce conflict during the conversation, and the murderer picked up the apple knife on the table and stabbed the victim to death.
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