“Zeng ke …” Zhao Yu pressed on Zeng ke’s shoulder excitedly and asked,”why did Yun Duo’ er apply a pungent chemical reagent to the bodies?”

“Well …” Zeng ke replied.”Didn’t we just talk about it? Yun Duo’ er didn’t want the corpses to be dug out by the animals, so she applied it …”

“No!” Zhao Yu reorganized his words and asked,”I mean, how did Yun Duo er know that smearing that chemical on the body would prevent animals from digging up the body?”

“Well …” Zeng ke pondered for a moment, then replied,”I’m not sure. Maybe she has watched that TV series?”

“That’s not right,” Zhao Yu said, pinching his chin.”What I mean is, Miao Xiaowen was the fourth victim. When Yun Duo’ er killed her, she already had some experience …

“But what about before that? Were the other corpses also smeared with the chemical reagent?”

“Um … Oh …” Seeing Zhao Yu’s excitement, Zeng ke seemed to have thought of something, but he still couldn’t figure it out.

“Do you think …” Zhao Yu pressed hard on Zeng ke’s shoulder and said heavily,”that Yun Duo’ er might have made a mistake when she first killed the man?”

“Ah?” Zeng ke finally understood what Zhao Yu meant.”You mean … Yun Duo’ er had an accident when she killed and buried the bodies in the past? So … That was why she thought of the method of using isotylanic chloride?

“Then … What kind of accident happened?” Zeng ke was at a loss.”The bodies she buried before were not buried deep enough, so they were exposed?”

“Mm …” Zhao Yu quickly came to a blank whiteboard, drew a circle on it with a pen, and said,”I thought so too. When Yun Duo’ er first started killing, she had no experience. Maybe she simply dug a pit and buried the body!

“But … Not long after the body was buried, it was dug out by some animal …”

“But …” Zeng ke raised an objection.”How did she know that the body had been dug out by the animals?” Could it be … Could it be that after killing and burying the bodies, she would often return to the burial site to check?”

“No!” Zhao Yu denied it. “That’s very rare. Only those murders with strong emotions would cause the murderer to return to the scene of murder repeatedly.

“Either it was out of guilt, or she wanted to pay her respects, or she was looking for some psychological comfort. But,” Zhao Yu frowned and said,”Yun Duo’ er had no feelings for the victim, and she was the cold-blooded type, so the possibility of her returning to the scene of the murder was not high.”

“Besides, she recorded the murder video! If you want to reminisce about the process of killing someone, can’t you just go home and watch the video?”

“Then … If we don’t go back to the scene, how do we know that the body has been exposed?” “Could it be that … After the bodies were dug up by the animals, they were first found, then reported to the police, and then made it to the news?” Zeng ke asked.

“Yun Duo’ er found out from the news that the corpses she killed could be dug out by animals? So, when she killed someone in the future, she thought of a clever way to use chemical reagents?”

Zeng ke said all of his speculations in one breath. After that, he and Zhao Yu both quieted down, and the atmosphere became a little tense and awkward.

“Hmm …” After a long time, Zeng ke covered his face and said,”team leader, isn’t my imagination a little too wild?”

“Yun Duo’ er is so cautious. What if she had already made preparations from the first time she killed someone? what if she had already thought of using chemical reagents?”

“That’s true, but …” Zhao Yu opened his laptop and quickly checked the records.”Li Feifan said that they bought the camera in Tokyo in the first half of 1999.

“The first victim of the video case, Wei Qiqi, was killed in the second half of 1999, about three months apart,” Zhao Yu said.”Then, can we assume that Yun Duo’ er had killed someone before Wei Qiqi?

“However, we didn’t buy any video cameras at that time, so we didn’t record the video?”

“Well …” Zeng ke hesitated, then asked,”are you really going to investigate?”

“Investigate!” Zhao Yu said decisively,”don’t let go of any ideas! We can check if there were any other missing girls around Yun Duo’ er and Li Feifan from the time they got married until the time when Wei Qiqi was killed!

“Zeng ke,” Zhao Yu added,”have you realized that, if your hypothesis is true, then this unknown murder case might not be difficult to investigate?

“First of all, when they bought the camera, they weren’t married for long.

“Secondly, the couple was busy building a film and television company at that time, so they were basically active in Beicang city of Xijiang province. You can focus on the local records to see if there were any cases that fit the characteristics of the video murder case.

“For example, after a girl went missing, she was killed and her body was buried. Then, her body was accidentally discovered, and the case has not been solved until now …”

“Oh … Oh …” Zeng ke nodded.”I understand. I’ll do it now!” But team leader … There’s something I don’t know if I should say. ”

“Speak!”

“Even if there was such a case, where there was a body dug out by an animal, it would have been more than 20 years ago,” Zeng ke said worriedly.”Let alone finding clues from the body, it’s impossible for the body to still be there, right?”

“Don’t forget, we didn’t even get Miao Xiaowen’s body …”

“Wrong!” Zhao Yu interrupted him and said,”the weakness of a serial killer is often the first time! The more people he killed, the more mature he would become.

“Yun Duo’ er is a person who keeps improving! If we want to find her weakness, we have to start from her first time!

“Zeng ke,” Zhao Yu said, pressing on Zeng ke’s shoulder again.”If our guess is true, then the police will definitely keep the body as evidence.

“Maybe we can find something that will excite us in these samples!

“This might seem a little ridiculous, but what if we’re right?”

“Mm … Alright, I’ll do it now!” With Zhao Yu’s explanation, Zeng ke became more energetic, then turned around to assign tasks.

However, just as he turned around to leave, someone knocked on the office door.

Zeng ke walked to the door and opened it.

“Sir,” a local police officer reported to Zeng ke, holding a laptop in his hand.”I think you need to take a look at this …”

As he spoke, the police officer turned on the play button on the computer screen, and a low and gloomy music came out.

Zhao Yu was curious, so he walked over to take a look. He saw that the tablet was playing a movie clip.

“The name of this movie is ‘sinful love,'” the police officer explained as he pointed to the screen.”It was shot in the early 1990s, and Yun Duo’ er was the female lead in this movie!

“At that time, Yun Duo er had just made her debut and wasn’t famous at all. Not only was this film a low-budget production, but the story was also too dark, so it was even banned from broadcasting!”

When the police officer was introducing the scene, Zhao Yu and Zeng ke had already seen Yun Duo’ er’s scene in the film.

Yun Duo’ er was holding a knife in her hand, and then she stabbed a girl who was tied up and couldn’t move …