Seeing Takagi Wataru follow Jiang Hang in, Shiratori Renzaburo greeted Jiang Hang and congratulated him on becoming a consultant to the Metropolitan Police Department.
"We really owe you a lot for the Kazato Kyosuke case; otherwise, Sato might have been attacked again."
Jiang Hang waved his hand: "There's no need to talk about cases that have already passed. Officer Sato has already thanked me. Let's get back to this case."
He looked at Masuo Keizo, who was still slumped to the side, his eyes vacant.
"Mr. Masuo, could you tell me how you're feeling right now?"
In response to Jiang Hang's question, Sato Miwako leaned close to him and whispered, "It's best to let Mr. Masuo have some peace and quiet right now. He must be feeling really bad."
"I just want to know what it feels like to kill your own wife. Mr. Masuo, the regret on your face right now is not an act, is it?"
The meaning revealed in Jiang Hang's words surprised almost everyone present, even Takagi Wataru, who had already guessed it, looked somewhat surprised.
"Jiang Hang, are you saying that Mr. Masuo is the murderer? How is that possible? Have you forgotten that Mr. Masuo was at the Metropolitan Police Department when Mrs. Masuo was murdered?" Sato Miwako immediately raised the key question in response to Jiang Hang's words.
She looked at Takagi Wataru: "Takagi, back then, you also had a few words with Mrs. Masuo, right? That alone proves that Mrs. Masuo's phone call wasn't a recording, right?"
Takagi Wataru nodded. He could confirm that the caller, Mrs. Masuo, was not recording the conversation, and the call logs on the phone found near the crime scene also proved this.
He was also a little confused at this moment. He originally thought that Jiang Hang wanted to say that all of this was done by Masuo Keizao's accomplices, but now it seems that the murderer in this case is Masuo Keizao alone.
Upon hearing Jiang Hang's words, Masuo Keizo's expression also changed drastically.
He wiped his forehead: "This... Mr. Consultant, I don't quite understand what you mean."
In response, Jiang Hang took out gloves, put them on, walked to the seemingly inconspicuous exercise bike next to the corpse, reached out and squeezed, and pulled out a thin thread, which was either a kite line or a fishing line, from the gap in the exercise bike's foot pedals.
Then, right in front of Keizo Masuo, he took down a small sign from the bookshelf that read "This Month's Fitness Goals," and hooked the knotted end of the thread onto the thumbtack that had been used to hang the sign.
After doing all this, Jiang Hang looked at Masuo Keizo, whose face had become even more unpleasant.
"I've already come this far. If you want to see more, I can continue until I've demonstrated all your techniques. Would you like to continue watching?"
Chapter 308: Chapter 306: The Ironic Reason for Murder
Seeing Jiang Hang's actions, Masao Keizo's eyes became somewhat shocked, seemingly surprised that Jiang Hang had cracked his modus operandi in such a short time.
But seemingly convinced that he hadn't given anything away, he still didn't seem inclined to admit it: "What are you talking about? I don't know what you mean. Do you think I'm the murderer of my wife?"
Listening to Keizo Masuo's explanation, Miwako Sato, who was standing to the side, clearly saw the hesitation on his face when Jiang Hang questioned him. Despite being a detective for so many years, she still couldn't help but have a ridiculous idea.
Just moments ago, she was thinking about how to calm down Masuo Keizo, who had lost his wife, but as Jiang Hang spoke, she couldn't help but have some doubts about the truth of the matter.
As Jiang Hang reconstructs Masuo Keizo's original method of murder, Takagi Wataru, standing behind him, finally realizes what exactly is wrong that he has sensed since entering the crime scene.
The knife pierced Masuo Kayo's vital area from the back in a horizontal direction.
This is very unusual.
When an ordinary person holds a knife to attack someone, whether they are holding it upright or backward, they will generally hold the knife vertically in their hand. Even if the direction of the thrust is slightly off, it is absolutely impossible to attack by holding the knife horizontally like this.
At least after Takagi Wataru tried it himself, he felt that this way of holding the knife was really awkward.
"No wonder it's like this. Just tie the two ends of the thread to the foot pedal of the exercise bike and the bookshelf respectively, and then install the knife on the bookshelf. In this way, as long as Masuo uses the exercise bike to exercise, the thread will slowly be wound up. Once it reaches a certain point, the bookshelf will be pulled down, and then the knife will stab Masuo horizontally into her back."
Takagi Wataru rested his chin on his hand, analyzing the case.
"Moreover, once the bookcase falls over, due to the angle, the thread will easily detach from the thumbtack it was originally hanging on and get completely caught in the bearing. Even if the bookcase is found lying on top of the corpse, it would be difficult to think of this place."
“If that’s the case, then even if the murder were committed elsewhere, the same method would be used to commit the crime,” he said, his gaze fixed on Keizo Masuo, as if to suggest that his alibi was no longer valid.
But before Masuo Keizo could say anything else, Shiratori Ninzaburo was the first to raise doubts about this method.
He looked at Jiang Hang and Takagi Wataru: "This reasoning is very interesting, but there are two things we need to confirm first. One is that if the pedal suddenly becomes heavy, it should be easy for someone to notice. The second is how the knife was installed on the bookshelf without the victim noticing it?"
Shiratori Ninzaburo's question left Takagi Wataru somewhat speechless.
He frowned slightly, seemingly unable to come up with a reasonable explanation for the moment.
But when he saw Masuo Keizo standing to the side, covered in sweat, he seemed to remember something and immediately asked Masuo Keizo, "I remember when we first arrived here, Mr. Masuo, you told us to go to other places to investigate first, and you came here first, right?"
"In other words, it's possible that you tampered with the crime scene before we arrived."
Upon hearing Takagi's question, Masuo Keizo wiped his forehead and then quickly claimed his innocence.
“Officer Takagi, I… I didn’t have time to do anything else. I had just entered the room and found Kayo’s body when that… that consultant came in and told me not to disturb the crime scene… At that time, I just saw the bookshelf on top of Kayo, so I wanted to move it.”
Jiang Hang nodded in agreement with Masuo Keizo's explanation. Masuo Keizo indeed had no chance to clean up the scene, but finding evidence was a very simple matter for him.
In fact, before Jiang Hang could even speak, Takagi Wataru, upon hearing the sound of the bookshelf collapsing, seemed to realize something. He clapped his hands and explained to Shiratori Ninzaburo, "I understand, it's the books on the bookshelf!"
He picked up a few books, then roughly measured the distance between the top of the books and the top shelf of the bookcase, and then took out two books with slight dents on the top.
"These are the two books. As long as you put the books on the top shelf, you don't need any special devices to use them to hold the knife in place. When the bookshelf falls over, the books will fall to the ground, making them hard to notice!"
"As for concealment, with this dark curtain, I think it would be enough to just put a few more books on the bookshelf. And in her own home, Mrs. Masuo probably wouldn't pay much attention to a few books on the bookshelf."
Takagi Wataru solved the problem of disposing of the murder weapon quite smoothly, but he had not yet come up with a suitable explanation for the sudden increase in the weight of the pedal.
However, Sato Miwako, seeing that Takagi Wataru and Shiratori Ninzaburo were two men who didn't usually use exercise bikes, couldn't help but remind them: "This kind of exercise bike can adjust the pedal load. I just checked the data on this exercise bike. Masuo-sama has been using the exercise bike to exercise every day for about half a year, so she has set the pedal load to be relatively high. You can try it yourselves."
She tapped on the bookshelf behind the exercise bike: "This bookshelf isn't particularly heavy, and since only the top shelf has books, if she had found a good spot, Mrs. Masuo might not have even realized something was wrong before she was killed by the falling bookshelf."
"Of course, this process will probably require dozens or even hundreds of calculations to find the most suitable location..." After saying that, her gaze also fell on the uneasy-looking Keizo Masuo beside her: "In this house, it seems that only you, Mr. Masuo, are most likely to be able to do this."
Keizo Masuo wiped his forehead: "It's possible that those thugs broke into my house beforehand and set this up..."
However, before he could finish speaking, Jiang Hang shook his head and rejected his words: "Those robbers didn't have time. This bookshelf of yours was only purchased a few days ago. These marks can be roughly judged by simply checking the dust under the bookshelf. Besides, this dark curtain of yours should have been installed yesterday. I saw it on the invoice for your bedside table."
Jiang Hang looked at Masao Keizo and suddenly asked him, "Moreover, you checked your watch four times in just two minutes at the Metropolitan Police Department, as if you were afraid of missing the time. But from the Metropolitan Police Department until now, you haven't checked the time even once. Can you explain why?"
"It's obvious that your wife comes here to exercise at two o'clock every day, and you know that, which is why you are so sensitive to the time at that time. You want to say a word to her before you kill her with your own hands to prove yourself, and you even specially asked Takagi to be your alibi."
“But you might have forgotten that you used thumbtacks dozens of times on this bookshelf to find the perfect spot, and you even accidentally injured your hand because of it. Those marks are still on the bookshelf,” Jiang Hang picked up the “This Month’s Fitness Plan” sign that was supposed to be hanging on the thumbtacks and gestured to him. “You can’t exactly say that you pinned it so many times just to make it look better, can you?”
"Or are you planning to wait until your accomplices are caught before they confess to your crimes?" Jiang Hang suddenly changed the subject, bringing up the bank robbery.
Upon hearing Jiang Hang utter the word "accomplice," Masao Keizo's expression turned even more grim.
"Accomplices?" Sato Miwako seemed to have thought of something. "Could it be..."
Jiang Hang nodded: "You should know about the accomplices in the robbery that occurred at Mr. Masuo's bank a few days ago, involving 200 million yen."
He then looked at Keizo Masuo, who was standing to the side, looking anxious and conflicted: "Inspector Megure and his team have obtained crucial clues that are enough to find out the true identities of the bank robbers from a few days ago."
“Inspector Megure is probably already on his way to the homes of your accomplices with his men. I believe we’ll hear from them soon. Do you really want to keep struggling, Mr. Masuo, the mastermind behind that bank robbery and the real culprit in this murder case?” Jiang Hang put pressure on Masuo Keizo.
Actually, he didn't call Inspector Megure at all. Inspector Megure was probably still worried about the identity of the robber. He just added some pressure to Keizo Masuo.
He wasn't making things up. Inspector Megure would soon get the robbers' information from him and then arrest the group of bank robbers.
He simply revealed a little bit of what would happen later in advance.
But Keizo Masuo was unaware of these things.
From the moment Jiang Hang easily reconstructed his modus operandi, Masuo Keizo had a premonition of his fate.
He originally wanted to fight back desperately, but he didn't expect that everything he wanted to hide had already been discovered by the other party.
At this point, he finally knelt down as if he had lost all his strength, seemingly admitting his crime.
"That's right, I killed Kayo with my own hands..."
After saying that, Masuo Keizo seemed to breathe a sigh of relief. He looked at Jiang Hang standing in front of him and said, "You truly are a great detective. Nothing can be hidden from you."
His tone became serious as he answered the question Jiang Hang had asked him at the beginning.
In other words, whether he regrets it.
His answer was affirmative: "Yes, I regretted it. I regretted it as soon as I heard her scream on the phone, but there was nothing I could do."
"None of this should have happened, so why did she suddenly go to the bank that day?"
“If she hadn’t been taken hostage by those guys, and if she hadn’t suddenly discovered their identities during the process and was preparing to report them to the Metropolitan Police Department, I wouldn’t have had to go to this extent.”
"I did all of this for her, so why did this happen!"
He seems to still regret killing his wife with his own hands.
Jiang Hang remained silent. Even if he didn't try to obtain Masuo Keizo's criminal memories, he knew how ironic the truth of this case was.
Kayo Masuo was actually a woman who spent money extravagantly, while Keizo Masuo was truly devoted to his wife, trying his best to satisfy her every need.
The cost of doing so is the ever-increasing credit card spending each month. Jiang Hang also found this bill under the bedside table in Masao Keizao's bedroom.
Luxury goods he buys every month and various beauty salon services account for almost half of Masuo Keizao's income.
Just a few months ago, Masuo Keizo, who was short of money, felt that he was no longer able to support his wife's unrestrained spending. In order not to lose face in front of his wife, he suddenly had the idea of robbing his own bank.
As a branch manager of the bank, he knew the security layout and deposit locations inside the bank very well. As long as they seized the five minutes when the defense was weakest, they could successfully get the money and leave.
Although this incident will be recorded in his bank file as a disgrace, and may even prevent him from advancing further in his career, compared to two hundred million yen, this minor punishment is nothing.
With this professional leading the way, he quickly found a group of risk-taking cronies in his usual social circle and successfully carried out the robbery plan.
Everything went smoothly until fate intervened, and his meticulously planned robbery was disrupted by his wife.
Kayo Masuo discovers the robber's true identity, and if she successfully reports him to the Metropolitan Police Department, bank robbery is a serious crime.
If they get caught, they'll probably have to spend ten years or even longer in prison.
Keizo Masuo also knew that if he really went to prison, his wife probably wouldn't wait for him until the day he was released.
He then secretly hinted at this to his wife, but although she had figured out the robber's true identity, she was completely unaware that her husband was also an accomplice in the robbery.
She even planned to go to the Metropolitan Police Department the next day and tell the police the true identities of those people.
In the end, he could only kill his own wife and frame the bank robbers who had not yet been caught.
Chapter 309: Chapter 307: Takagi Wataru's Expectations
After Keizo Masuo confessed, Inspector Megure obtained information about his accomplices from him, as well as a clue about several people that Kayo Masuo had circled in her photo album before her death. In just one hour, Inspector Megure had already arrested the robbers from the bank robbery that occurred three days earlier.
According to Inspector Megure, when they broke into the apartment where the robbers lived, the robbers were lying on top of the stolen money, dreaming of the day, seemingly not worried at all about the police coming to their door.
In the system's judgment, the cases of Masuo Keizo's murder of his wife and his planning of a bank robbery were judged as two separate cases, meaning he received the reward for two three-star cases at once.
In addition to a beginner skill training book, Jiang Hang also acquired a beginner trap-making skill.
Although it's only a basic skill, it's much more reliable than the little bit of trap knowledge he gained from his previous poison and bomb proficiency skills.
"As expected of Jiang Hang, he solved two cases on his very first day as an advisor to the Metropolitan Police Department," Matsumoto Kiyoshi, the superintendent of the First Investigation Division, congratulated Jiang Hang over the phone.
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