Chapter 105

"If my guess is correct, then the prop instead of the fishing line should be the recording tape in the telephone landline."

Baiyan Zhenyu went to the telephone landline, gently opened the cover, took out the recording tape and checked it. He found that there were many distortions on the tape that should have been in a smooth state. Obviously, it should not be the traces left during normal recording.

"Sure enough." Bai yanzhenyu narrowed his eyes slightly, looked at Bai cangyang who was talking to Henggou police officer, and sneered: "it seems that the murderer is this guy."

Baiyan Zhenyu found a policeman and ordered him in the name of Henggou police officer: "Mr. police, Henggou police officer asked you to buy a recording tape of the same model as this recording tape. This is the prop needed to crack the case."

"Well, I see."

The policeman saw that Bai yanzhenyu had a good relationship with Henggou police. Naturally, he didn't doubt Bai yanzhenyu. He immediately went outside to look for the same type of recording tape.

On the other hand, police officer Henggou looked helpless. The on-site investigation and the inquiry of the suspect were in the final stage, but he still didn't find any useful clues.

Under the inquiry of police officer Henggou, Sheng Gang Daofu seemed a little impatient and complained discontentedly: "if I say, it's not a murder at all. The microphone you said didn't fall off, maybe it's an accidental coincidence. Can we go now?"

Fine arrow and macro grabbed their hair and echoed, "yes, Mr. policeman, I still have work tomorrow morning, so I'll leave first."

"Then I'll leave too." Bai cangyang also said goodbye to officer Henggou.

"Wait... Please wait..."

Before officer Henggou finished his words, Bai yanzhenyu came over and said confidently, "don't worry, I already know the way to make this secret room, and I also know who the murderer of this case is!"

"What?!"

After hearing Bai Yan Zhenyu's words, everyone was surprised. Officer Henggou soon came back and asked happily, "brother Bai Yan, who is the murderer?"

Baiyan Zhenyu didn't answer his question directly, but said with a smile: "as I said before, this room looks like a secret room, but in fact it's just a disguise easily arranged by the murderer with some props."

Everyone was confused by Bai Yan Zhenyu's words. Daofu Shenggang asked impatiently, "what props did the murderer use?"

"The props are audio tapes and chess pieces. As for the murderer's criminal tactics, I'll show you directly later."

After the policeman who was fooled to buy the tape returned, Bai yanzhenyu replaced the original tape with it, pulled out the tape enough to extend to the length outside the door, gave a live demonstration and began to explain the criminal techniques.

"First, pass the circle on the key through with a tape, then leave the key outside the door and go back to the room with the rest of the tape."

"Then, turn the three chess pieces upside down, place them in a triangular layout, support a notebook on it, and hang the end of the excess tape on the chess piece closest to the phone."

"Finally, when you enter a telephone message with your mobile phone, the tape will roll inside. This force pulls the key outside the door into the room through the crack in the door below. After knocking down the chess piece supporting the notebook, it destroys the static state between the chess piece and the notebook, and finally makes the key pressed under the notebook."

After Baiyan Zhenyu restored the scene, he took out his mobile phone to make a call. After the recording function was enabled, the pulled tape immediately contracted inward slowly, driving the key into the room. Finally, after knocking down the chess piece, it was pressed under the notebook.

"In other words, the murderer who can use this technique is Mr. Bai Cang who recorded ten messages in the answering machine."

After seeing Bai Yan's real cover up, officer Henggou's train of thought suddenly opened. He turned to Bai cangyang with a different look and said coldly, "Mr. Bai Cang, you are the murderer, aren't you? There are distortions everywhere in this tape, which is the evidence of your technique. You'd better admit it quickly!"

"Mr. policeman, wait a minute..."

Bai cangyang's forehead burst out a cold hum and forced himself to defend: "I just left a few more messages. How can you say that I did it? Besides, if I was really the murderer, how could I come back to the scene?"

"Hehe, you came back because you wanted to take back the tape."

Bai yanzhenyu jokingly looked at Bai cangyang, who was trying to die, and directly revealed his intention. He sneered: "when I checked the original tape, I noticed that there was someone's fingerprint on it. At the scene, it seems that you should have left the fingerprint on it, right? That's the evidence to prove that you are a murderer."

"You're right. I did kill Professor Hirota..."

In the face of conclusive evidence, Bai cangyang's whole body limped down as if he had lost his strength. He confessed: "because I asked the professor to return the photo to me, the professor said he forgot where to put the disk and said he wanted to send the photos before my cosmetic surgery to the editorial department, so I lost control. When I got back to my senses, the professor had fallen into a pool of blood."

"So in order to escape the blame, you deliberately designed it as a secret room, making people mistakenly think it was an accident."

Bai yanzhenyu sighed, and then Bai cangyang said, "but because it was a temporary plan, you left fingerprints on the tape when arranging the scene, so you are going to be the first discoverer of the body. Let Mrs. Guangtian confirm with you that the scene is a secret room, and then find a machine to replace this tape. I didn't expect that I would visit professor Guangtian first."

"Yes, everything is the same as you said."

Bai cangyang nodded and said, "after killing professor Guangtian, I took all the disks away. Now they are all in the glove box of the car at the door."

"Mr. Bai Cang, please come with us to the police station."

Officer Henggou ordered his men to handcuff Bai cangyang, then went to Bai cangyang's car storage box and found the disks he had hidden.

After the case was solved, police officer Henggou patted Bai yanzhenyu on the shoulder and thanked him. However, after Bai yanzhenyu asked to help his friend get back the disk, he refused Bai yanzhenyu on the grounds that all the evidence had to be taken back to the police station.

Baiyan Zhenyu was not a rigid person, so he changed his way and asked officer Henggou to allow him to copy the data in the disk.

This time, police officer Henggou didn't refuse again. After Bai yanzhenyu copied the information, they left professor Guangtian's house with Bai yanzhenyu.