Luo Hui is somewhat familiar with the process, and knows that he can't contact the dark line investigator at this stage, and the secret contact mentioned in the information needs to be investigated in person, so he doesn't have much to ask.

On the way out of the base, Master Mao walked with his head bored, without saying a word, Luo Hui was a little helpless, so he had to find something to say: "Master, you can't take the special plane in the bureau, there is a long way to go to Shanghai, what means of transportation should we take?" ”

Only then did Master Mao speak: "Take a civilian airline with another identity." ”

Luo Hui wanted to ask where to start the investigation of this case, but Master Mao intercepted and said: "Cat team, I know that you asked to be with me to ease the relationship, but I'm sorry, before I see that you have the ability to be the captain of this team, I won't have a good attitude, and I won't obey you, don't talk nonsense, I'll say it when it's time to talk about the case." ”

Luo Hui smiled bitterly: "You are quite direct......." ”

Before he finished speaking, Master Mao walked forward by himself, and Luo Hui sighed.

The two took a civil airliner, although the seats were next to each other but speechless all the way, after more than two hours of flight finally arrived in Shanghai, after coming out of the airport, Master Mao looked at the information and said: "Let's go to the scene of each deceased jumping off the building to see, cat team, what do you think?" ”

Luo Hui nodded and said no opinion.

In this way, the two went to seven crime scenes, which were located in different areas and different locations in Shanghai, some jumped in a crowded office building, and some jumped in a residential area, and the gender, age, and work of the deceased were also different, and they had nothing in common.

Luo Hui was a little unwilling, and proposed to Master Mao to visit the residents and shops near the scene, trying to find witnesses and see if there were any suspicions.

Master Mao had no objection, so the two went separately to visit the residents and shops near the scene of the crime, Luo Hui had an advantage in visiting as a policeman, and it didn't take much time to find many witnesses, but the witnesses only witnessed the moment when the deceased jumped off the building and committed suicide, and there were no valuable clues.

Master Mao came back to meet and reported the results of the visit, but the result was the same as Luo Hui's visit, which was worthless.

The two sat on the curb and nibbled on dry food, Master Mao said unhappily: "Waste a day visiting witnesses, but I didn't find anything, the cat team, the dark line investigators are not sure that they will never report ordinary cases, they must be reported if there is something strange, you used to be a police officer to handle ordinary cases, this set of strange cases we want to investigate does not work!" ”

Luo Hui didn't care about Master Mao's sarcasm, and said: "No matter how strange the case is, there will always be clues, as long as it is a case that occurs on the earth, it must follow the physical laws of the earth, and the criminal investigation method is based on the laws of geophysics, I don't think it will work, we must have omissions." ”

Master Mao snorted disapprovingly, ignoring Luo Hui, Luo Hui said firmly: "Since the dark line investigator can find the connection, why can't we find out, are we not as good as the ability of the dark line investigator?" ”

Master Mao said: "The dark line investigators are professionally trained, highly sensitive to the details of the anomaly, and it is not surprising that they can find out. ”

Luo Hui said: "I have studied investigation techniques in the police academy for four years, plus eight years of investigation experience in criminal police, I don't believe that I am not as good as a dark line investigator!" ”

Master Mao said coldly: "It's useless to brag, then you should find out the secret connection that the dark line investigator said." ”

Luo Hui closed his eyes and reviewed the confessions of all the witnesses in his mind.

At this time, a few little girls walked by on the side of the road, the little girl was very curious about Master Mao's Taoist dress, giggling and pointing, Luo Hui's thoughts were interrupted, he opened his eyes and glanced at the little girl, and suddenly the smile on the little girl's face reminded him of something, and said excitedly: "Master, please report to me what the witnesses said, and you must not miss a word!" ”

Master Mao said impatiently: "I said the cat team, didn't you report it, but also report, do you not understand people or ......." ”

Luo Hui said in a deep voice: "Master, this is very important, I hope you cooperate!" ”

Master Mao saw that Luo Hui was serious, so he had to say: "The first witness said that he saw the deceased jumping off the building and falling to the ground, his joints twisted, a large amount of blood oozing out from under his body, and his head was flattened like a watermelon, but he had a relieved expression on his face; The second witness said that when the deceased fell, he was hung by a steel pipe on the outer wall of the building, pierced his stomach, and even his intestines were brought out, and the blood was dripping like rain, and he stood below and looked up to see that the deceased convulsed twice in pain, and finally raised the corners of his mouth to freeze the expression of ...... dead. ”

Luo Hui interrupted: "Enough, I found the common denominator of these seven suicide cases!" The results of my visit and the results of your visit actually have something in common, the witnesses have inadvertently mentioned the expressions of the deceased such as relief and raising the corners of the mouth, and these expressions are related to one word! ”

Master Mao was curious: "What word?" ”

Luo Hui said: "Laugh! These few were laughing to varying degrees before they died! ”

Master Mao was stunned for a moment, recalled what the witnesses said, and it was indeed the case, and he said thoughtfully: "But what does this mean?" ”

Luo Hui excitedly pressed Master Mao's shoulders and said: "Most of the people who commit suicide have knots that can't be opened, they commit suicide with depression and sadness, and very few people who commit suicide commit suicide with laughter, even if there are only a few with a bitter smile, you should distinguish the difference between a sad bitter smile and a relieved smile, right?" ”

Master Mao had a picture in his mind, if a person stood on the edge of a tall building, the picture of jumping off the building with a smile was indeed very weird and abnormal, he said: "Okay, I admit that this is a common denominator, but even if we find this common denominator, it doesn't seem to be of much use to us, Cat Team, please instruct how to follow this common denominator to investigate?" ”

This question really stumped Luo Hui.

Master Mao smiled obscenely, and deliberately made a mistake: "Time is pressing, and I ask the cat team to instruct what to do." ”

Luo Hui muttered: "It would be nice if you could see the body or have a forensic report, maybe you can find more commonalities, and more clues will help to determine the direction of the investigation, and now it is impossible to determine the direction of the investigation just by the vague clue that the deceased was laughing before he died." ”

Master Mao said disdainfully: "You don't know, the police did not find that the death of the deceased was suspicious, and the forensic report would not be conducted for an autopsy, and the body was handed over to the family, and the big city of Shanghai was cremated in a funeral home, and a week had passed since the seventh person committed suicide, and he had already been cremated for funeral." ”

Luo Hui ran out of ideas, so he had to ask, "Master, then do you have any way?" ”

Master Mao knew that the situation was serious and he couldn't play with him, so he didn't make things difficult for Luo Hui anymore, and said in a deep voice: "One word-wait!" ”