crime profiler in the dark

10 minutes later, Baihu Police Station, Criminal Investigation Division [-]

Bai Haolin read the conclusion of the profiling given by Zhuang Xumao, secretly glad that Inspector Zhu and Inspector Xu did not regard criminal profiling as a myth, and accepted everything as it was ordered.In Zhuang Xusubaru's profile, Bai Haolin disagrees with him in many places:

Although the No. 3 deceased was in his early 30s, the mode and scene of his murder were different from the first and second deceased. He was a victim encountered by the murderer at an unexpected time and place, so his age was not It is projective, that is to say, the murderer is between 20 and 25 years old, a college student who is about to graduate or a young man who has just stepped into society;

Same as when he mentioned it to Zhuang Xumao for the first time, Bai Haolin didn't think the murderer was a low-income person, nor did he think he had a social barrier. Although his killing mode was extremely aggressive, his IQ and self-discipline Enough to hide his true nature, so he also has friends in daily life;

In the first case, the murderer acted as a "peacock". In the third case, he used the backflow of blood to the trachea to buy himself time to escape, indicating that the murderer had a medical or even psychological background;

Bai Haolin was unable to deduce from the scenes of the three cases that the murderer had a history of mental illness—the scene was clean, the tactics were neat, and he fled the scene quickly after he succeeded, and the murderer was not captured by the monitors of the two movie theaters, and many witnesses at the scene The author could not give an accurate description, indicating that the murderer was very clear-headed. If the murderer had a history of mental illness, even if he was taking relevant treatment drugs, he would not be able to disguise the scene so perfectly. Bai Haolin had no idea that Zhuang Xumao would do this to the police a judgment.

Bai Haolin knew that Zhuang Xumao had just graduated from TMX University as an honor student, and was highly praised and highly recommended by the professor. There is a difference between knowledge and real cases. If you follow the script, you will only enter into a misunderstanding. Zhuang Xusubaru's profile is currently in such a state.

"How is it?" Seeing Bai Haolin's solemn expression, Chief Xu was a little anxious when he kept silent.

"There is some truth to it, but I still need to look at some places." As a colleague and senior, it is naturally impossible for Bai Haolin to completely overthrow Zhuang Xumao's profile. This will damage his authority, and he will have to work with him again in the future. It's hard for sheriffs to cooperate.

"How to say?"

"It may be because I didn't read the information carefully. So far, I haven't found any on-site evidence that the murderer has a history of mental illness. On the contrary, he is quite clear-headed. Even in the third case, he can escape unscathed. There is no confusion about what should be done when and what should be done.”

"Could it be related to the fact that he is taking drugs?" Sergeant Xu didn't want the information he spent a lot of time and energy to obtain was useless, so he asked.

"Now I haven't seen any evidence in this regard. I will study the case materials carefully again. Maybe I was negligent." Bai Haolin replied ambiguously, also trying to save Zhuang Xumao's face.

Although Bai Haolin tried his best to excuse Zhuang Xumao, his profile was still greatly discounted in the hearts of the two police chiefs.

"The third crime was committed in Baihu Park. The deceased had been in Baihu Park for a relatively short period of time. The murderer must have found that the deceased was easy to get in his hands during his routine behavior. He could not restrain his inner impulse and killed the deceased. The time of his planning was long It is much shorter than the first and second cases, so his main activity range will not exceed two kilometers from Baihu Park, and it is very likely that he has the habit of running in the morning."

Geographical profiling is a very important part of criminal profiling. In the first and second cases, the murderer would deliberately avoid his own safe area. In the third case, his geographical location can be narrowed down a lot. What surprised Bai Haolin was that Zhuang Xumao didn't mention such an important clue in his profile. Was it because he paid too much attention to the murderer's mental state and neglected it?

"I asked the team members to look for witnesses in the surrounding apartments and commercial buildings, but no one saw the situation at that time, and no suspicious person reported." Police Chief Xu sighed, but no matter how anxious he was, he wanted to solve the case as soon as possible. He will not break the can and smash it, and accept everything from anyone.

"If you add the profile of age, gender, and education level, it should be much smaller?" Chief Zhu asked.

"I agree with Xiao Zhuang's profile of the murderer's age and personality. I ask the two police chiefs to focus on people who have studied in medical school, or whose parents are doctors, and people who have the habit of running in the morning. Narrowing down the scope will help.” Although Bai Haolin believed that the murderer’s age would not be 30 years old, he did not say so to facilitate Zhuang Xumao’s cooperation with the police chiefs in the future.

"Shouldn't the mental illness history be added for the time being?" Sergeant Xu asked.

"I'll tell you after I read the information again." Bai Haolin wanted to know what evidence Zhuang Xumao made such a judgment based on, and he didn't dare to jump to conclusions now.

After the discussion, the three of them went home separately. It was already eleven o'clock in the evening when Bai Haolin returned to his apartment. After taking a shower, he wrapped himself in a bath towel and entered the study room to spread out the case materials of the throat-slitting case. He had just read a few pages. The mobile phone on the table suddenly buzzed, and the caller ID was from Sergeant Xu. He thought to himself that even if Sergeant Xu was impatient, he wouldn’t spend the whole night checking around Baihu Park. Before he could make a sound, Sergeant Xu's eager voice came from the receiver:

"Xiaobai, there is another case!"

"Throat-cutting case?" Bai Haolin knew that his question was unnecessary, but he still wanted to confirm.

"Well, the crime scene is in the Jinhui Commercial Building on Dongkui Street, the parking lot on the second basement floor. This time the crime scene is different!" Just from the sound, I can guess that Sergeant Xu's eyebrows must be twisted into ropes now. .

"I'll come over now."

"Better hurry up!" Sergeant Xu's voice sounded very irritable and a little unhappy, Bai Haolin didn't think much, put on a T-shirt, took the car keys and went out.