Mrs. Tsujimura scolded the girls with a look of disgust and sent them away from her.

Only Yoruichi Toyama knew that it was all just to clear them of suspicion.

After all, what's about to happen is an unbelievable murder case.

On their way upstairs with Mrs. Tsujimura, the group encountered the diplomat's father.

The old man was then led to a room where the wife had already placed the evidence of the murder.

Mrs. Tsujimura put on an apologetic expression, saying she was sorry for making everyone see so many irrelevant people, and knocked on the door of the study on the second floor.

And indeed, everyone heard loud symphony music coming from the study.

This was the last trap set by Mrs. Tsujimura—a completely sealed room.

Yoruichi Toyama never really understood what the point of this damn secret room was.

Unless it's a staged suicide in certain situations.

But this incident is different.

According to the original story, Conan and Heiji Hattori were the first to notice the wound on the victim's neck and determined that it was the fatal injury.

This leads to the conclusion that the deceased could not have committed suicide.

So what exactly is Mrs. Tsujimura thinking? ...

Before he could figure it out, Mrs. Tsujimura, who had knocked on the door, said that no one answered. She took out her key, opened the door, and went inside, then turned around and invited everyone in.

“Really…” she said in a slightly complaining tone, “My husband likes to listen to symphonies, but he always plays them really loud. He must not hear us outside.”

That was one explanation, but things changed when she approached the desk and Mr. Tsujimura, who was propping his head up with one hand on the desk, still didn't react.

Yoruichi Toyama tensed up completely.

【Host……】

As Taro reminded him, he also took the cat out from under his arm and put it on his shoulder.

"Yes, Kotaro-kun, it's up to you again this time!"

"Ready—jump!"

Just as Mrs. Tsujimura reached out to shake the seemingly asleep diplomat...

The black cat pounced on her like lightning!

To be precise, he lunged at her hand, which was still holding the key ring.

No one in the room had time to be surprised or angry.

Then Yoruichi Toyama rushed forward, grabbed Mrs. Tsujimura's hand, and raised it high into the air.

"Madam, don't move!"

At the same time, they also heard the young detective's unusually stern tone.

"you……"

"It's best not to touch any sharp object that can be hidden in a keychain, even if it's just a needle as thin as this."

Those with keen eyes, like Heiji Hattori and Conan, had already noticed the glint of cold light peeking out from the separated keychain in the hand that was forced to be raised.

Kogoro Mouri and Ran also noticed this after being reminded by this sentence.

"A needle?" Kogoro, being a detective, immediately realized what it could be.

"Madam, you're holding a needle close to your husband, could it be that you intend to...?"

"Enough! This is extremely rude!" Mrs. Tsujimura cried out, still struggling. "How could you frame me like this!"

"I didn't do anything!"

Yoruichi Toyama first forcibly snatched the keychain with the needle from her hand before letting out a sigh of relief and shrugging his shoulders.

"Was it because you didn't have time to do it, Mrs. Tsujimura?"

"If my cat hadn't accidentally pounced on us and drawn us to the needle in your hand, where would it be now?"

"Is it on your husband's neck?"

The onlookers recalled what had happened just a minute earlier and realized that it was not impossible.

Mr. Tsujimura was dozing off at his desk as the symphony played, and his wife naturally came over to wake him...

If it weren't for that cat causing the chaos, who would have thought that such a natural action could conceal murderous intent!

Conan and Ran, who had witnessed Taro's prowess more than once, were fine, but Heiji Hattori's eyes revealed a complex look of relief.

For some reason, Kogoro Mouri touched his neck.

It feels like a prickling sensation from a fantasy, ouch!

...

Caught red-handed, Mrs. Tsujimura gave up trying to explain herself after Kogoro briefly examined the needle and concluded that it was probably soaked in deadly poison.

Hattori Heiji then summoned Mr. Tsujimura and the young master and his wife, inviting them to listen to the lady's statement.

Upon examination, it was found that the diplomat Tsujimura had taken sleeping pills and had his servants give him some cold water. He was slowly recovering from a semi-conscious state.

Faced with this situation, Mrs. Tsujimura had no choice but to tell the truth.

In fact, the trigger for this whole thing was Mr. Tsujimura's girlfriend, Sachiko Katsuragi.

"Sachiko was taken away by her grandmother's family when she was very young, but because her grandparents were old, she was raised by her aunt's family and took her uncle's surname..."

Just by saying that, the detectives around them, all experts at gossip, immediately understood.

"So, Miss Sachiko is actually the madam's..."

Mrs. Tsujimura nodded slowly to Hattori Heiji, who had raised the question.

“That’s right, Sachiko is my biological daughter with my ex-husband Kenji Yamashiro…”

"Kenji Yamashiro!" The diplomat Tsujimura, who was slowly waking up in his armchair, suddenly regained his senses for a moment and chuckled coldly, "That idiot..."

"You're not allowed to talk about him like that, you scum!" Mrs. Tsujimura shouted fiercely, but her current husband drooped his eyelids and dozed off again.

“I see, I understand now,” Mr. Tsujimura nodded.

His grandson and his prospective granddaughter-in-law, already taken aback by this fact, stared at him with disbelief and uncertainty.

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