Criminal Investigation Chronicle

On January 2000, 1, Zhao Lei received a letter, which was very short, with only 1 words, "The police are nothing but proud of the 13/26 case".Taking the information about Lin Chong's hospitalization period given by Dr. Sun, Zhao Lei locked himself in the office and buried himself in research.I watched the monitoring of Lin Chong's sleepwalking for a few hours, but nothing was gained. Lin Chong was like a marionette during sleepwalking, going back and forth, aimlessly. Although the time is not fixed, it is not long. Response, only severe stimulation can wake it up.Then Zhao Lei began to study the onset calendar of Lin Chong marked by Dr. Sun. In [-] and a half months, Lin Chong had [-] episodes of illness, but the interval of onset was not regular. The interval could be more than [-] days, and the onset would occur within three days. twice. "What did you miss?" Zhao Lei murmured.

January 1. "Brother Zhao, where are you going in such a hurry? There is a meeting going on later, so don't go too far away." Looking at Zhao Lei who hurried past with dark circles, the beautiful policewoman Hua Xiaomei asked. "I'm going to the police academy, ask for a leave of absence for me." Zhao Lei left the police station without looking back.When they arrived at the police academy, the students had already started their classes.Zhao Lei went straight to the No. 2 dormitory building of the police academy to find the dormitory supervisor. "Hello, policeman, where's the old dormitory supervisor?" Zhao Lei asked after seeing that the dorm supervisor in Building 40 had changed. "Oh, hello, police comrades, Lao Zhang quit long ago. An accident happened the year before last, and he resigned not long after, saying it was unlucky. No, I was transferred from logistics to take over for him." A middle-aged man in his 98s with some white hair answered. "Do you remember when he left?" Zhao Lei asked immediately as if he had caught something. "I'll check the work log, wait a moment, let me see, oh, it's November 11, 18..." Zhao Lei thought about it, and it was November 98, 11, which was the time when Lin Chong was in court. ...

"Hello, old Xu, I'm Zhao Lei, help me find someone, Zhang Zhilin, used to be the dormitory supervisor in Building No. [-] of the police academy, yes, I want all his information, the more detailed the better, if you can find it, help me Find out where he is now and what he does. Let me know if there is any news, um, I'll go to Langfang, so..." Zhao Lei drove to Langfang with the information Zhang Zhilin obtained from the police academy when he entered the job, and started Field investigation.

On January 1, Zhao Lei returned to the police station.After three days of investigation, Zhao Lei learned some information, combined with the information his colleague Lao Xu found, he formed a bold idea in his mind.

In the afternoon, Zhao Lei came to the psychiatric hospital, found Lin Chong, and asked straight to the point: "What impression do you have of Zhang Zhilin, the caretaker of your dormitory?"

Lin Chong thought about it for more than ten seconds, and replied: "Uncle Zhang, he is very kind and conscientious. He is a five-story dormitory building. Every night after the lights are turned off, he will go around and check carefully. He is also very enthusiastic about the students. One time our dormitory classmates had dinner outside, drank some wine, and went back late, he also kept it secret for us, just persuading us to abide by school discipline, not to be an example, etc. This kind of thing is very common, not only in our dormitory, but many classmates have similar experiences .As for other aspects, I don't know, but I heard that Uncle Zhang has always been single."

Zhao Lei asked again: "Then do you know that Zhang Zhilin is a fellow villager with you, and it is only ten minutes away from your home?"

Lin Chong: "Oh? I don't know about this. I haven't heard of it. It seems that I haven't seen him before when I was in my hometown."

Zhao Lei: "On the night of September 93, 9, the night you witnessed Zeng Qian being sexually assaulted, you said that you saw a man in the alley called 'Second Child', with a shrill voice and tall stature, is that true? , is there anything missing?"

Lin Chong: "No, that's all. At that time, most of the man's body was in the dark, and I couldn't see clearly."

Zhao Lei: "How tall is that man?"

Lin Chong: "I'm not sure. I was short at the time, but he was more than a head taller than me, at least 1.8 meters. You came to me to ask this, is there any new progress in the September [-]th case?"

Zhao Lei: "I'm not sure yet. I'll find you again when I have news. If my inference is correct, you can go out in a short time."

Back at the police station, Zhao Lei reported his findings to Li Liang, and the police officers quickly started researching. "Zhang Zhilin, male, 45 years old, from Langfang, Hebei, 1.8 meters tall, weighing 15 kilograms, high school education, unmarried, poor family, former Yanjing Police Academy logistics staff, worked in the police academy for 95 years, in August 8 On November 98, 11, he served as the supervisor of the No. 18 dormitory building of Yanjing Police Academy. He resigned on November 98, 11. Please pay attention to his previous experience. Zhang Zhilin’s father died early, and his mother brought him up. However, according to the investigation, Zhang Zhilin When my mother was young, the relationship between men and women was very chaotic. Several neighbors confirmed that Zhang’s mother had an improper relationship with multiple men at the same time. In 18, Zhang’s mother died of illness, and Zhang Zhilin’s whereabouts have been unknown since then. His neighbors said that he went to the south to work, but there is no We found his whereabouts." "Wow, this man is simply a genius!" Xiaomei couldn't help exclaiming as she looked at Zhang Zhilin's profile. "Indeed, from the information and my field investigation, Zhang Zhilin, a 99-year-old striker, is full of power. His elementary school and high school teachers are all impressed by him, and they speak highly of him, calling him a 'genius'. He has a wide range of interests and hobbies, and is talented in all aspects. His math teacher even said that he once showed him the problem Hua Luogeng solved, and he solved it in a short time. Sun Shan failed in the exam, and he was 20 years old that year. After that, he worked in Langfang for several periods without outstanding performance. Then he applied to the police academy in 78 and worked until he resigned in 21. What do you think of this experience? "This person has a very high IQ, and he may have been replaced in the college entrance examination, otherwise it would be impossible to get such a small score. Moreover, he is from the same hometown as Lin Chong and Zeng Qian who were involved in the September 83th case." Xiao Wang said first. "And his physical characteristics are in line with the murderer Lin Chong described in 98 as the murderer who attacked Zeng Qian." Old Xu added. "This is the record of Lin Chong's illness in the mental hospital. I have studied it. The date marked in red is the day of Lin Chong's illness. There is a rule in it. You see, starting from admission to the hospital, Lin Chong will inevitably become ill every 93 days. Two times, but the interval between them is not fixed. For example, if Lin Chong gets sick on January 30 and also gets sick on January 1, then he will never get sick in the next 1 days; On January 1, he has not been sick, so Lin Chong will definitely get sick on January 2. This rule is that I intercepted Lin Chong’s second onset after admission to the last time, that is, No.28. Lin Chong’s onset , follow this law. Imagine a math genius, in Lin Chong’s dormitory building, contacted and studied Lin Chong’s disease for more than two years, he will definitely discover this law. And choose to commit the crime on September 1, 1, Lin Chong must be 1 The disease occurred on August 29, 1, and he did not develop the disease until September 30. Therefore, Lin Chong must have sleepwalked on the night of the incident, which made Lin Chong no alibi. From these surveillance videos, it can be seen that, Lin Chong was completely unconscious during sleepwalking, with low resistance, and could be lightly guided, but could not be awakened by ordinary stimuli. In this way, if I were the murderer, I would steal the anesthetic in advance while Lin Chong was on duty in the laboratory, and then While in class, I went to Lin Chong’s dormitory and opened the door, took out a condom from his cabinet, and waited for the day when Lin Chong would definitely get sick, anesthetized Zeng Qian who was walking in the playground at night, and hid Zeng Qian after the lights were turned off. From the beginning, after the sexual assault, when Lin Chong was sleepwalking, guide Lin Chong to leave fingerprints on the scene, and then kill Zeng Qian, or kill Zeng Qian first, and then take fingerprints. He had enough time and energy to plan and implement the crime. I suspect that Zhang Zhilin was the murderer who sexually assaulted Zeng Qian in Langfang, Hebei in 13. Zhang Zhilin failed the college entrance examination that year, probably because he suffered unfair treatment. From this, he started Taking revenge on the society, looking for pleasure, and his mother's bad behavior when he was young may leave a shadow in his heart. And this letter is just a manifestation of his further provocation of the judicial system!" Zhao Lei took out the letter he received that day letter, "I believe that Lin Chong is innocent, and the murderer is Zhang Zhilin. And Zhang Zhilin is also likely to be the murderer or accomplice of Zeng Qian's gang in 98. In the police academy, he recognized Zeng Qian and Lin Chong, and Committed a crime again, using Lin Chong's sleepwalking to frame Lin Chong."

"Although it is still speculative, Zhang Zhilin's whereabouts are unknown. We need to find this person first to remove Lin Chong's suspicion. Now there is no strong evidence, and Lin Chong will continue to receive treatment. I will report to my superiors and make Zhang Zhilin a criminal suspect in the two cases." People are wanted," Li Liang said.

mental hospital. "Officer Zhao, what do you think?" Lin Chong was very smart. That day Zhao Lei came over and asked him about Zhang Zhilin. He had already guessed it, and he also discovered the law of his sleepwalking, and told Zhao Lei his deduction. "Consistent with my deduction, you were framed. Zhang Zhilin used your sleepwalking pattern to commit crimes. It's just that you still need to stay in the hospital for a while."

February 2000, 2, mental hospital. "Congratulations, your disease has been cured, or it can be cured without medicine." Dr. Sun said to Lin Chong with a smile. "After unraveling this knot, your sleepwalking is really good, Lin Chong, go out and finish your studies, join us, you will be an excellent people's policeman." Zhao Lei also said. "Thank you Brother Zhao. Although it took me more than a year, I worked very hard. During this time, I have completed all relevant courses. If I pass the exam, I will work with you this summer." Lin Chong replied with a knowing smile.

In September 2000, Lin Chong, who graduated successfully, was assigned to the criminal police team of Yanjing Police Station to practice with Zhao Lei because of his excellent grades.