"No," Mizumayue said very facelessly, and now the people present are the most suspicious of him, so wouldn't letting him leave and letting him clear the evidence. "Now that you're one of the suspects, if you want to leave, you have to be searched for your belongings and accompanied by a police officer, hopefully you can understand. ”

"Uh...... Don't bother, it's not a big deal. The president sat down awkwardly, and it was clear in Mizumazuki's eyes that he was weak-hearted.

After talking for a while, Fujiwara Sakaki came in again, still holding a stack of reports in his hand, and came in and handed it to Mizumatsuki.

Mizuma turned over the time, and when the forensic department investigated the monitor on the roof of the office building, it found that the monitor could swing its head, but the power of the hinge was a little too great, and a relatively deep cut was found on the edge of the roof, and the extended cut found that it was just roughly connected to the monitor and the I-beam drag mark on the abandoned building opposite. The report was accompanied by photographs of roof marks and monitors, as well as some distance and weight data.

Worryingly, a harmonica was found at the scene of the death, which was identified as the deceased's object, and began to think that it had fallen out of the deceased's body. But it was later found that there were no fingerprints on the harmonica, and there were no traces of the harmonica falling on the ground around it, and it was speculated that the murderer deliberately placed it under the I-beam for the victim to pick up.

Mizuma turned the report over, took a pen and wrote on the blank back, drew a sketch of the roof of the second floor, and connected a line between the monitor and the I-beam, assuming that the monitor swings its head to pull the I-beam, and can roughly calculate the tension of the cable and the required power of the monitor.

But after calculating, Mizuma gave up, threw the half-counted straw paper to Fujiwara Sakaki and asked him to continue the calculation, and Mizuki and Miwako Sato went out to have a small meeting with the colleagues waiting in the corridor.

"The police department makes up, what should I do now that I have fallen into a bottleneck?" asked Fat Ball Qianhe. I have to say that after the promotion of the Twilight Police Department, the status of Mizuma Moon has improved a lot, and the police officers under him do not ask the police department Miwako Sato but ask the police department for advice on water and the moon.

Mizumatsuki pondered for a while and said, "Come, let's have a live teaching class." ”

"Today, I would like to take this opportunity to talk about the pre-guess and speculation method, which is used in the current situation where there is no clear directional evidence, but there are relatively few suspects. ”

"The first step is to guess a murderer, I personally think that the president of this case is the most suspicious, let's assume that he is the murderer, do you have any opinions?"

"......No," the surrounding officers replied.

"Assuming he's the murderer, what are the methods he can use? Sakaki, is the data calculated?"

"Report to the police department, the data is calculated, that monitor can pull the I-beam!. ”

"Okay, then I guess he used the monitor to swing, pull the I-beam down, and stone the dead to death. ”

"Next is the second step, speculation operation, we found a harmonica without fingerprints at the scene, so I speculate that he stole the deceased's harmonica first, in order to avoid leaving fingerprints, so he wiped it, put it on the ground to attract the deceased's attention, and used the monitor to pull down the I-beam while the deceased was picking up the harmonica. ”

"The third step is to corroborate. If you want to do this, you will leave marks, such as cuts on the edge of the roof. At the same time, if you look at this photo, there is a protrusion at the bottom end of the monitor that is obviously not functional for later welding, and there are traces of being tied and vigorously pulled by thin wires, which can basically confirm the establishment of this technique, and the speculation is reasonable. ”

"The fourth step is to look for evidence that may exist. Continuing to sort out his next actions, after smashing the deceased, according to the secretary, he sent the secretary down to check on the situation, and then came down himself. So what did he do in the meantime? Presumably, this technique required a thin wire to connect the monitor to the I-beam, possibly a piano line or a fishing line, but we didn't see the line, and it was probably that he put it away, and he probably didn't have time to deal with it, and he tried to leave just now to dispose of it. Now it could be on the body or in his office. ”

"The last step, confirm, you go and contact this agency to apply for a search warrant, and I'll go and talk to the president. Okay, class is over. And the people dispersed, each to his own duty.

Mizumatsuki walked into the office, and the president immediately greeted him and asked, "How about the officer, is there a result?" Mizumayue felt that he was not in a good state of mind, as if he was very nervous.

"You sit down first, and I'll talk about what the police have found," Mizuma said, nodding.

"Now we find out...... Let's go...... So presumably you ...... first Let's go...... Then let him come here to talk to you, calculate the time he walked into the alley, use the harmonica to prolong the time he stands there, and use the monitor swing to pull down the I-beam and smash the dead to death. ”

"Well, according to what you say, officer, anyone can use the automatic swing of the monitor to commit a crime as long as they find out the rules!" the president argued.

"The suspects are roughly you and the secretary, and according to you, the secretary didn't have time to deal with that thread, so we locked you up. And if you use automatic swinging, how can you ensure that before the arrival of the deceased, you will not fall off the I-beam because of the automatic swing? Therefore, only you, who are sitting in the office, can manually swing the head of the monitor at the right time, and only you, as the president, can install a monitor with a rotational power much greater than the required value. ”

"No, it's not. It's not the president who is the opposite, it's Kogoro Mori," not counting the time, but being able to see it. ”

Mizuma raised her eyebrows, the president's office only has a window facing the street, it is estimated that the secretary said that the president did not come out when the crime occurred, how can you see it?

"At the time of the crime, there was a cleaning truck of the company parked across the street, but then the president asked to drive away, so you didn't see the officer," Mori Kogoro said eloquently, "The cleaning car has a feature, there is a small piece of glass that can be used as a mirror at the fisheye position, and my daughter Xiaolan was still using that glass to look in the mirror at the time of the crime, I think the president should have been using a telescope to observe the alley through the reflection of the glass, right?" Because Xiaolan looked in the mirror at that time and interfered with your vision, so you pulled down the I-beam in advance, causing the deceased to be stoned to death before he could pick up the harmonica. Am I right? Mr. President. ”

Mizuma pouted, there was a car parked opposite at the time of the crime, and then drove away, he asked them eight times before about the situation at the time of the crime, but no one said...... The problem of this group of detectives not cooperating with the police has never changed, and no matter what clues they have, they swallow them and refuse to say them......

PSThe power increase of the monitor is a setting I added myself,Because every time I see this, I want to complain:My home appliance fan can also swing its head,But the strength is pitiful,Even if the monitor is a high-end product,,It won't be able to pull a piece of I-beam, right?