"Officer Xu, you take the video back to the Dao Forensics Department, and ask them to zoom in here, increase the resolution, and you will definitely be able to see it clearly, I suspect that the deceased did not accidentally fall downstairs, but was kicked down, and there was an argument. ”

"It's not as simple as workers' compensation. Qiu Lan stared meaningfully there, her eyes determined.

In the science and technology center of the forensic science and technology department of the police station, the bear expert reprocessed the entire film, and extracted the clips of the black shadow separately and enlarged and modified them.

The figure and appearance of the deceased were faintly recognizable, and although the figure standing on the stairs could not see who it was, the clothes were very obvious.

All the workers working on the site wore overalls, but this man was the only one in civilian clothes.

"The evidence is conclusive, so let's go and ask the foreman to see what he has to say about the video. ”

After a cold and serious voice sounded leisurely, the police station dispatched three police cars directly to the construction site.

At about two o'clock in the afternoon, the foreman of the construction site was napping in front of the desk in the office, but the door of the office was suddenly opened, and the police officers of the Serious Crime Unit strode in.

Xu Chengyan, who was standing at the front, took out his police card and held it in front of the man, and said sharply: "Foreman, we have investigated you and a case of falling from a building, so we want to ask you to go back to the police station to assist in the investigation." ”

"Next, it is not necessary for you to say it, but everything you say may become evidence in court. ”

The foreman slowly opened his sleepy eyes, and the scene in front of him suddenly drove away his heavy sleepiness, "This, what are you?"

"Take him back to the police station. Xu Chengyan ignored it, and directly asked his subordinates to handcuff him, and then took him back to the police station.

Before pushing the door into the interrogation room, he turned around and whispered to the colleague beside him: "You go to the forensic doctor Qiu Lan, you should need to do a live forensic examination of this person." ”

"Yes. ”

After the order, he pushed the door open and entered the room.

As soon as he saw Xu Chengyan's figure, the foreman immediately stood up excitedly, and he couldn't wait to ask: "Officer, shouldn't I have told you everything about the last time? Why do you want me to assist in the investigation?"

"You sit down and talk. Xu Chengyan put down the notepad and pen in his hand, sat opposite him, and looked at him sharply, "Don't you know why you were called to the police station?"

Listening to his words, the foreman swallowed nervously and lowered his eyes slightly, "I, I don't know, I said it last time, and I gave you everything you wanted." ”

Seeing him so dishonest, Xu Chengyan didn't say much to him.

He stood up and walked to the evidence box that he had already carried before, and took something out of it.

"This is the last time you gave me a schedule to work. Xu Chengyan put the thing directly in front of him.

"Yes, yes. The foreman's voice was intermittent, and a dense sweat broke out on his forehead.

"It seems that what Dr. Qiu told you last time didn't make you a little alarmed, making false testimony or giving false confessions is a crime of obstruction of justice, and the maximum sentence is five years in prison. Xu Chengyan walked to his side with deep meaning, and lay his hands on the table.

"I don't know if you really don't care about going to jail, or if you're deliberately hiding something?"

His gaze stayed on the foreman's face, staring at the foreman a little weak.

"I, I'm not hiding it, what I said is true. The foreman raised his hand lightly and wiped the sweat from his forehead.

"Okay, then I'll show you a video. Xu Chengyan hooked the corners of his lips, but there was no smile in his eyes.

He used the computer in the interrogation room to show the processed video to the foreman.

After looking at it, his eyes were obviously much paler.

"What does this mean?" he pursed his lips in trepidation, his eyes wandering from side to side.

"Don't you know what you mean?" Xu Chengyan slapped his palm on the table and asked sharply.

At this moment, there was a gentle knock on the door of the interrogation room, "Officer Xu, I'm the forensic doctor Qiu Lan." ”

As soon as he heard that it was Qiu Lan, Xu Chengyan immediately tightened the corners of his mouth and said softly, "Doctor Qiu, come in." ”

As soon as the words fell, Qiu Lan and her assistant Xiao Cong, who was carrying a silver test box, walked in, "Officer Xu, I'm here to conduct a live forensics for him." ”

"Living forensics?" The foreman looked at the two people in front of him in a panic, and kept sitting and swallowing, obviously flustered, "I, I didn't commit a crime, what do you do to collect live evidence?"

"It's not up to you to say whether you committed a crime or not, I will do the live evidence, and your body will help you say it. Qiu Lan glanced sideways slightly and glanced at him, her eyes as dark and sharp as an eagle.

Looking at her needle-like eyes, the foreman couldn't help but bow his head.

"Doctor Qiu, then I'm sorry for you. Xu Chengyan raised the corners of his mouth, nodded slightly, and then stepped aside.

"No trouble, my job. After Qiu Lan responded with a generous and decent smile, she took the box from her assistant Xiao Cong and spread it out on the table.

The silver alley was filled with ultraviolet lights, goggles, and things to sample the epithelial cells and blood of the mouth.

Looking at the professional equipment, the foreman gasped, and his body continued to tremble.

"Take your pants off. Qiu Lan's eyes sank and she spoke coldly.

"What did you say?" the foreman stared at him in amazement, "Take off, what are you doing with your pants?"

"We found in that video that the man kicked the deceased down the stairs and then fell directly to the ground, and the scene happened to find blood stains in the corner of the triangle iron rod that did not belong to the deceased. ”

"The preliminary judgment is that the person who did it should have fallen and injured himself, and I want to see if you have a wound on your buttocks now. After Qiu Lan told him the reason with a cold face, she said coldly: "Take off your pants!"

Hearing her words, the nerves in the foreman's entire brain were all erected, and he pressed lightly, and the wound on his buttocks was still tearing and hurting.

"Satoshi, take a picture. Qiu Lan took a cotton swab and took some samples of coagulated blood from the wound on his buttocks, and then took a precise ruler to measure it so that he could later compare the object with the shape of the wound.

"Officer Xu, on his buttocks, there is indeed a wound that matches the bloodstained place of the triangular iron rod that was brought back from the forensic evidence collection that day. Qiu Lan put away the sample and said with a serious face.

"I'll send the sample to forensic examination later, and the specific result is to forensically test whether the blood sample contains the same substance as the iron rod. ”

"Okay, I'm sorry for Dr. Qiu. Xu Chengyan looked at her with gentle eyes and nodded slightly.

After sorting everything out, Qiu Lan whispered a few words in the assistant's ear, and Xiao Cong left.

"Officer Xu, can I stay here and watch you try the case?" Qiu Lan turned around and asked in a low voice.

Xu Chengyan pursed his lips, hesitated for a moment, and then took a spare chair from the side and put it beside him, "Doctor Qiu, sit down, you are here, and you can also help me supplement some facts of the case." ”