Meng Yuan was stunned by the question, frowned and thought about it: "Maybe the murderer coerced the He couple to slip and fall on their own, and then kill them by force?" At this point, he shook his head and denied: "No. If force is used, there will be traces on the corpse, and it will not be impossible to detect, and this method is not safe, in case anyone shouts for help, the matter will not be done. ”

"Exactly." Fu Jun said, "So I guess that the murderer still used drugs first, then changed into the deceased's shoes, made the illusion of slipping and smashing the tea set, and then killed and arranged the scene." ”

Meng Yuan pondered for a moment, then bowed his head and said, "Reasonable." ”

At this time, Fu Jun frowned slightly, and asked Meng Yuan: "Ah Yuan, is this drug on the rivers and lakes really so powerful?" ”

Meng Yuan's expression was solemn and he said, "As far as I know, the Tibetan Sword Villa has this medicine. ”

As soon as these words came out, everyone fell silent.

Fu Jun frowned slightly, and secretly thought to herself: With the ability of the Tibetan Sword Villa, the conditions and means for committing the crime are complete, but she instinctively feels that this case has nothing to do with the Tibetan Sword Villa. Murdering civilians senselessly for several years in a row, the Hidden Sword Villa will not do such a cost-effective deal, even if someone is acting privately behind the back of the Villa, such a person will not tolerate him.

At this time, the investigator who ran to interrogate finally returned, and Fu Jun avoided inside, and Tang Jun talked to him.

Tang Jun asked, "Can you find the craftsman?" ”

The investigator wiped his sweat and said, "I found it, and the craftsman said that the windows of all the rooms in the main room were painted dark green, and the windows in the west room were also painted dark green, and he applied the paint during the daytime on the day of the crime, and in this weather, the paint only needs to dry overnight." ”

Fu Jun stood behind the fan, listening to the investigator's breathless words, and the frowning brow that had been furrowing finally relaxed.

This is indeed a clue, and it is a breakthrough clue.

At this time, not only Fu Jun, but even Tang Jun and Meng Yuan also had slightly moved faces.

The investigator's reply brought them to the attention of a problem that they had previously overlooked. At this moment, everyone's eyes were focused on the windowsill with the handprints on Nishijima.

The windowsill. The lacquer is vermilion!

It is impossible for a twenty-year-old craftsman to paint the wrong color, and if he takes a step back, even if he paints the wrong color. After the night, the paint had already dried thoroughly, and it should not have been imprinted by the people who came to investigate the case.

This vermilion lacquer windowsill must have been repainted after the craftsman left on the day of the crime, and the person who painted the vermilion lacquer was not He Gu himself. It can only be the murderer.

Fu Jun believed that He Gu would never paint and play by herself, but out of caution, she still asked Tang Jun: "Cousin Jun, is there any traces of paint on He Gu's body?" ”

"Not really." Tang Jun immediately said, his joy was beyond words.

This discovery can be described as heavy, and this cousin of his family is really talented, and he is even more powerful than the old investigator who has accumulated years.

"This is the work of the murderer." Meng Yuan said in a deep voice.

Tang Jun immediately agreed: "What Brother Meng sees is extremely true. Speaking of this, his eyes showed a little puzzlement: "It's just that why did the murderer repaint the windowsill?" What is the purpose? ”

"I speculate. It's to cover up the traces. Fu Jun said, and pointed to the handprint on the windowsill, and said: "On the night of the crime, the new paint had not dried, and the murderer probably accidentally left traces on the windowsill in the process of committing the crime, maybe handprints, maybe footprints, or something else, in short, it can't be found." So he repainted the vermilion lacquer and covered all the marks. ”

She said. Tang Jun nodded.

As soon as the question was spoken, he also thought of this possibility. However, he was still a little puzzled: "Why didn't the murderer still paint the green window, but changed the red window?" Isn't he afraid of being seen out that something is wrong? ”

This is really weird.

The entire main house has green windows. For some reason, the murderer wanted to change the color of the window at the murder scene.

Fu Jun's eyebrows furrowed.

If it is said to cover the traces, it is to be painted again as it is, and why do you want to cover the green paint with vermilion lacquer? Such an obvious difference is easy to see, could it be that the murderer chose the wrong color in a panic?

The idea just came to mind. Fu Jun immediately denied it.

The murderer did things very carefully, just looking at the layout of the scene, from the teacup to the ice cube, to the location where the bodies of He Gu and his wife fell, every place was designed just right, showing the meticulousness of the murderer. There is also this newly painted vermilion lacquer, Fu Jun has just looked at it carefully, and the layer of paint is densely and evenly brushed, obviously carefully brushed more than once.

How could a cautious, detail-savvy murderer suddenly become careless and commit such a big mistake? What was the reason for him to do such a thing?

For no reason, Fu Jun's mind reappeared the scene of the previous case.

That time, the murderer tried his best to move the extremely heavy cabinet, just to cover the Qian Lingsha splashed on the wall, he chose this thankless way to cover up the traces, why?

Fu Jun stared at the vermilion lacquer windowsill in front of him in a daze, and the picture flashed back in his mind from time to time, and the splashing of Qian Lingsha on the wall overlapped with the vermilion lacquer windowsill.

The murderer's modus operandi can be described as exquisite, but he was clumsy when covering up the traces twice, did he do it on purpose, or was there any reason why it had to be so?

Fu Jun's eyebrows furrowed, and there seemed to be a heavy fog in front of her, making her feel like she was in the dark. However, she clearly had a feeling that the answer was not far away, and it was about to come out.

Suddenly, like a lightning bolt crossed his mind, Fu Jun's eyes lit up suddenly.

She suddenly noticed that the vermilion lacquer windowsill and the splashed Qianling sand, dark green paint and blue brick walls had an obvious commonality, but it was easy to ignore:

Color!

They're all red and dark green!

Last time, in order to cover the "red" Qian Lingsha on the "dark green" brick wall, the murderer did not hesitate to move the bulky four-legged cabinet and made a low-level mistake; The second time the murderer made a mistake, it was also to cover up the traces, and covered the original "dark green" paint with "red" vermilion.

Fu Jun's eyes became brighter and brighter, and his heart was pounding.

Why does this murderer always make mistakes when red and dark green appear at the same time?

Could it be that the murderer of this murderous serial murder case is actually ...... Color blindness?!

Fu Jun's eyes suddenly brightened.

It's a great possibility!

Suppressing her beating heart, she began to recall what she had learned about color blindness in her previous life.

Color blindness, commonly referred to as "red-green color blindness", is a condition in which people with color blindness are unable to correctly distinguish between red and dark green, especially in dim light. (To be continued.) )