The lights were still on in the office of the Serious Crime Unit, but there was no sound, and the four of us nestled in our chairs, lying on our desks, and hurried to catch up on sleep.

This is our normal situation as a criminal policeman, whether it is hungry or staying up late, or even investigating outside for a day, it is our job.

In the office building of the Ningzhou City Public Security Bureau, not only the office of the serious crime team is lit up, but also the lights are on in various departments, and they are working intensively.

All the police officers of the Forensic Section, the Technical Investigation Section, the Trace Examination Section, the Laboratory Section, and the DNA Room are all working hard for this murder case.

They have to race against time to get clues and hand them over to us as soon as possible, so as to facilitate our follow-up investigation and detection work.

In the autopsy room of the forensic department, Ren Qiushi and Zeng Lan have completed the autopsy of the two bodies of the female deceased and the child deceased, and they are conducting autopsies on the male deceased.

They were dressed in dissecting gowns, sweat already soaking through the backs of their clothes, and they kept wiping the beads of sweat from their foreheads.

"There was a large amount of residual food in the stomach of the deceased, indicating that the time of the victim was similar to dinner." Ren Qiushi let out a slightly tired voice.

"A large amount of food has not been digested, and in this state, there is no way to judge the time of death by the dissolution in the stomach." Zeng Lan was also very tired, and said lightly.

"The time of the crime is within three hours from seven o'clock to ten o'clock, this is a murder case, the time of death of the deceased is very important, we must be as accurate as possible." Ren Qiushi said in a deep voice.

Zeng Lan looked at the corpse on the dissecting table, then at Ren Qiushi, and said slowly: "The time of death itself is within three hours, and there is no way to be so accurate through the conventional methods of corpse temperature, corpse spots, corpse stiffness, and gastric dissolves. ”

Ren Qiushi nodded, he was also very embarrassed to judge the time of death of this autopsy and autopsy.

He pondered for a moment and took a deep breath: "The reason why it is difficult to accurately judge the time of death is because conventional judgment methods are affected by the environment, especially temperature. Temperature can change the occurrence of corpse temperature, corpse stiffness, and corpse spots, so we must use a method that will not be affected by the environment. ”

"How?" Zeng Lan cheered up and asked seriously.

Ren Qiushi froze and said lightly: "Eyeball chemical method." ”

"Eyeball chemistry?" Zeng Lan suddenly frowned and looked at Ren Qiushi with some puzzlement.

"The eye chemistry method, a new method for determining the time of death, was discovered by John Coe, an American physician in the United States. He found that after death, the red blood cells in the corpse will continue to rupture regularly, and the potassium ions in the red blood cells will continue to enter the vitreous humor of the eye in a regular manner, and the time of death can be accurately judged according to this reaction. Moreover, this method is not affected by the outside temperature, so the time of death is more accurate. Ren Qiushi explained seriously.

Zeng Lan understood the principle of eye chemistry, and naturally also understood this autopsy method through the law of changes in red blood cell potassium ions.

It was because she understood that she knew that this method was very difficult to operate.

Ren Qiushi thought for a while and said in a deep voice: "There is no professional equipment in the forensic department to conduct the examination of the chemical method of the eyeball, and this matter still needs the help of the laboratory department. You immediately contact the laboratory department, this time for a joint autopsy. ”

Problems arose in the autopsy of the forensic department, but a solution had been found.

Compared to the difficulties of the forensic department and the workload of the trace examination department, the technical investigation department has carried out relatively smoothly, and they have completely cracked the mobile phone and computer used by the deceased, and sorted out a large number of documents.

They are looking for some key clues that are important to the case in these documents.

In the middle of summer, the day is always early, and it is not yet five o'clock, and the sky is already bright.

We had just slept for three hours when Xiao Xuan from the Technical Investigation Department walked into the office of the Serious Crime Unit with a printed document.

He had just stepped in with one foot and saw that we were all resting, and he hesitated for a moment to wake us up.

After thinking about it, he was going to come a few hours later.

Just as he was about to turn around and leave, the subtle footsteps were heard by Xue Hang alertly, and he immediately sat up.

Xue Hang was together, and we all woke up with it.

The lack of sleep made my eyes a little sore, and tears flowed uncontrollably out of my eyes.

I yawned and rubbed my face vigorously, only then did I see clearly that it was Xiao Xuan standing at the door.

"Did you find out?" I quickly asked.

Xiao Xuan looked at me, nodded, hesitated, and said in a low voice: "You haven't closed your eyes all night, I don't know how many nights you have to stay up next, anyway, the investigation will wait for everyone to go to work at eight o'clock, you can sleep for a while." ”

"There's no clue, and I can't sleep well, tell me, what have you found?" I settled down, looked at Xiao Xuan, and rubbed my sore eyes.

"I found a planner in the deceased's computer." Xiao Xuan said as he walked towards me.

I was stunned for a moment, and subconsciously frowned because my eyes were sore and I couldn't open them: "Planner, show me." ”

Xiao Xuan handed me a planner with the date of the crime: "The deceased seems to have a strong time management aspect, like this kind of planner, I have found a lot, basically every day, even on rest days. ”

I took the planner and looked at it carefully, it clearly planned what to do in the morning, what to do in the afternoon, and what to do in the evening, in great detail, and the time was accurate to the minute.

"It seems that the deceased had a very serious obsessive-compulsive anxiety disorder." Li Meng yawned and said hesitantly.

"Obsessive-compulsive anxiety disorder?" I feel a little strange about this new term.

I've heard of OCD, I've heard of anxiety, and I've never heard of OCD.

Li Meng slowly explained, "Obsessive-compulsive anxiety disorder is obsessive-compulsive anxiety, which is a type of anxiety disorder, and there are many types of this symptom, and almost everyone will have it, but the symptoms are different. Judging from the detailed schedule of the deceased, he did not make a plan for the contents, but only for the time, which shows that these plans of his were resilient.

The reason why the schedule appeared was because he didn't want his planned life to be disturbed by something that happened suddenly. Once this happens, he will feel extremely anxious, so he will have a relatively large mood swing. For example, irritability, irritability, madness, etc.

If the disease is not effectively treated and controlled, it can be highly violent. ”