One of them was the one who found the dead.

"Officer." He greeted the three.

Shan Chenxun bowed his head, approached and asked, "After the fire and the explosion, did anyone touch the natural gas valve?" ”

"Nope." The firefighter told him with certainty, "No one is allowed to enter or leave the building, let alone touch any equipment, including us, until absolute safety is ensured." ”

Shan Chenxun frowned slightly, he glanced at Su Jin, and then went downstairs.

After walking two floors, Su Jian spoke: "In other words, it is possible that someone has secretly moved the valve?" ”

"I don't rule out this possibility." Before the words fell, Shan Chenxun's mobile phone rang.

He picked it up, listened for a while, and said, "Well, we'll be back now." ”

After collecting the line, he said to Su Jin, "Gu Sir has found something over there, let's go back to the police station first." ”

Hearing this, the two women had already quickened their pace.

When they arrived downstairs, Shan Chenxun arranged for Lao Yang, Gao Shan and Yin Dongfang to stay behind to continue the investigation, and He Bin and Li Bai returned to the police station with them......

Twenty minutes later, the group appeared in the laboratory.

Gu Sir and Yu Sisi stood in front of the display table, on which was placed a white cloth of special material, and a black shoe print was printed on the white cloth.

"The shoe prints on the back of the deceased ......" Gu Sir explained to them, "Men's leather shoes, about forty-three sizes, we have tried our best to restore them, but there are still only lines on the soles of the feet, and the heels have not been taken ......."

Su Jin couldn't get too close, and stood by the wall and watched from afar.

Gu Sir deliberately used black, so the shoe lines were very clear, and the lines could be seen.

"The texture of the sole is slightly shallow, the shoes should be older, the owner of the shoes may have an outer figure, and the shoe pattern on the outside of the sole is more seriously worn."

Yuan Ke took a look, and it was true that there were many fewer lines on the outside than on the inside.

"Boss, I have an idea......" she looked at Shan Chenxun.

"Say." The man didn't raise his eyes, still staring at the shoe print.

"Could the shoe prints on the deceased's back be the same as the shoe prints on the side of the bed? The same is that the back heel mark is not clear, could it be a focus problem? Yuan has seen this kind of person, the whole body is used to rushing forward, no matter walking or standing, the body posture is facing forward, so that the force point on the soles of the feet is all on the forefeet.

"Focus?" Li Bai didn't understand.

"Possibly." Gu Sir took over and explained to everyone, "What Xiao Yuan means is that this person's body is used to moving forward, and the soles of his feet are strong, so the shoe prints on the forefeet are more obvious. ”

"So, the shoe prints on the side of the bed are really the same person?" He Bin crossed his arms over his chest and stroked his chin in contemplation.

Shan Chenxun was silent for a moment, then raised his head and asked Su Jin, "What do you think?" ”

"Size 43 shoes, according to the normal height ratio, this person is at least 1.75 meters or more, can leave shoe prints next to the bed, and the weight should not be light." Su Jin spoke, her little face serious and indifferent.

"What about the badge? Can it be recovered? Shan Chenxun asked again.

Gu Sir nodded, "It's a waste of time......"

He walked over to the computer and turned on the screen, and there was a picture of it with the badge on it.

"Xiao Yu has learned text restoration technology abroad, and this time it came in handy......" Gu Sir clicked a button, the picture was enlarged several times, and finally a window popped up, and the pattern and handwriting on the badge were displayed on the window, "Lily Insecticide Company." ”

"Lilies?" Yuan Ke exclaimed, "This is a well-known pest control company in the Imperial City, and I also found this company at home some time ago!" Su Forensic ......"