"Zeng Ke," Zhao Yu asked excitedly by pressing Zeng Ke's shoulder, "Why, Yun Duo'er wants to apply a pungent smell of chemical reagent to the corpse?"

"Well......" Zeng Ke replied, "Didn't we just discuss?" Yun Duo'er painted the ...... in order to prevent the corpse from being dug up by the animals."

"No!" Zhao Yu reorganized his words and asked, "What I'm talking about, how did Yun Duo'er know that applying that kind of chemical reagent to the corpse can prevent animals from digging up the corpse?"

"Hmm......" Zeng Ke pondered and replied, "It's hard to say, maybe, she has also watched that TV series?"

"That's not right," Zhao Yu pinched his chin and said again, "I mean, Miao Xiaowen is the fourth victim, and Yun Duo'er already had a certain amount of experience when she killed her......

"But before that, were all the other corpses coated with chemical agents?"

"Hmm...... Oh......" Seeing Zhao Yu's excited appearance, Zeng Ke seemed to think of something, but he still didn't think of it.

"......What do you say," Zhao Yu pressed Zeng Ke's shoulder hard and said heavily, "Will Yun Duo'er miss the first killing!?"

"Huh?" Zeng Ke finally understood what Zhao Yu meant, "You mean...... Yun Duo'er had an accident when she killed people and buried corpse......s in the past? She just thought of using allyl isothiocyanate?

"So...... What happened to the accident?" Zeng Ke said helplessly, "The corpse she buried before was not buried deep enough, and it was exposed?"

"Hmm......" Zhao Yu quickly came to a blank whiteboard, drew a circle on it with a paintbrush, and said, "I think so too, Yun Duo'er didn't have experience in killing people when she first started, maybe she simply dug a pit and buried the body!"

"But...... Soon after the body was buried, it was dug out by some animal......"

"But......" Zeng Ke objected, "how did she know that the corpse had been dug out by animals......?" Could it be that after she kills and buries the body, she often goes back to the burial site to check on it!?"

"No!" Zhao Yu said negatively, "There are very few such cases, only the kind of murder with a strong emotional bond, the murderer will repeatedly return to the scene of the killing."

"Either out of guilt, or wanting to pay tribute, or looking for psychological comfort or something...... But," Zhao Yu frowned and thought about it, "There is no emotion between Yun Duo'er and the victim at all, and she herself is that cold-blooded type, so it is unlikely that she will return to the scene of the murder......

"Besides...... If you want to relive the murder process, why don't you just go home and watch the video?"

"That'...... If you don't return to the scene, how do you know that the body is exposed?" Zeng Ke said casually, "Could it be ...... After the body was exhumed by animals, it was first found, then reported to the police, and then it was in the news?

"Yun Duo'er learned through the news that the corpse killed by herself could be dug out by animals? So, when she killed people in the future, she thought of a clever trick to use chemical reagents?"

Zeng Ke finished talking about this speculation in one breath, and after finishing speaking, he and Zhao Yu all quieted down, and the atmosphere seemed a little tense and a little embarrassed.

"Hmm......" After a long pause, Zeng Kecai covered his face and said, "Team leader, isn't my imagination a little too rich?"

"Yun Duo'er is so cautious, what if, since the first time she killed someone, she has been prepared, and she has already thought of chemical reagents?"

"That being said, ......" Zhao Yu opened his notebook, quickly checked the records, and said, "Li Feifei said that the camera was purchased in Tokyo in the first half of '99.

"Wei Qiqi, the first victim of the video case, was killed in the second half of 99, with an interval of more than 3 months...... Zhao Yu pondered and said, "So...... Can we assume that before Wei Qiqi, Yun Duoer had killed people?

"It's just that I didn't record the video because I hadn't purchased a video camera at that time?"

"Hmm......" Zeng Kezhi asked, "Is it really checked?"

"Check!" Zhao Yu said decisively, "We can't let go of any ideas! We can check whether there are any other missing girls around the couple since Yun Duoer and Li Feifei got married and until Wei Qiqi was killed!"

"Zeng Ke," Zhao Yu added, "Did you find out, if your assumption just now is true, then this unknown murder case may not be difficult to investigate!"

"First of all, when they bought the camera, they hadn't been married for long.

"Secondly, the couple was still busy building a film and television company at the time, and they were basically active in Beicang City, Xijiang Province, you can focus on looking up the local case filing records to see if there are any cases that match the characteristics of video homicides?

"For example, there is a girl who disappeared and was killed and buried, and then the body was accidentally found, and then the case has not been solved to this day......

"Oh...... Oh......" Zeng Ke nodded, "I understand, I'll do it!" but the team leader...... There's a saying, I don't know if to say it or not?"

"Say!"

"Even if there is such a case, there is really a corpse that was dug out by an animal, but it was more than 20 years ago," Zeng Ke said worriedly, "Not to mention that we can find clues from the corpse, then the corpse can't still be preserved, right?"

"Don't forget, we didn't even harvest Miao Xiaowen's bones......"

"Wrong!" Zhao Yu interrupted him, "The weakness of a serial killer is often in the first time! As he kills more people, he will become more and more mature.

"Yun Duo'er is a person who keeps improving! If we want to catch her weakness, we have to work hard from her first time!

"Zeng Ke," Zhao Yu said on Zeng Ke's shoulder again, "in case our guess is true, then the police will inevitably leave a sample of evidence for that body."

"Maybe we'll find something exciting in these samples!

"This seems like a bit of a, but what if we really say it?"

"Hmm...... Okay, I'll do it!" With Zhao Yu's explanation, Zeng Ke also came to the spirit, turned around and went to arrange the task.

He had just turned around and walked away when someone knocked on the office door.

Zeng Ke happened to walk to the door and opened the door casually.

"Sir," he said, seeing a local police officer with a straightboard computer in his hand, "I think you need to take a look at this ......"

As he spoke, the officer turned on the play button on the computer screen, and a low and gloomy sound of music came from inside.

Zhao Yu was curious, and also walked to the front to watch, but saw that a movie clip was playing on the straight computer.

"The name of this movie is 'Bad Love,'" the officer said, pointing to the screen, "and it was filmed in the early 90s, and Yun Duoer is the heroine of this movie!"

"At that time, Yun Duoer had just debuted and was not famous at all, this film was not only a low-budget production, but also banned because the story was too dark!"

When the police officer introduced, Zhao Yuhe Zeng Ke had already seen that the scene of Yun Duoer appeared in the movie screen.

But seeing Yun Duo'er holding a knife in her hand, she stabbed a girl who was tied up and couldn't move......

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