Because Jiang Sheng kicked the door just now and made a loud noise, except for the drunken female secretary, everyone else heard the movement and rushed to Ms. Su Fang's door.

"Bang !!"

Facing the locked door, Jiang Sheng did not hesitate at all, and kicked it open directly.

"You're all waiting outside in case of further disruption to the scene."

After Maori Kogoro saw Jiang Sheng kick the door open, he first admonished the others, and then entered Ms. Su Fang's room with Jiang Sheng.

However, at this time, Ms. Su Fang had lost her breath, she still had a dagger stuck in her neck, and two hundred Xiao Bule masks were sprinkled all over the room, and those bloody masks looked strange and terrifying.

"No, she has no breath anymore, call the police!" Mori Kogoro shook his head after checking Ms. Su Fang's pulse.

Jiang Sheng turned to Lan Chuan Dongya and shouted, "Everyone is gathered in the hall, and no one is allowed to leave until the police arrive, because the murderer is likely to be among you." ”

……

After receiving the alarm call from the twin maids, Officer Twilight rushed over with Officer Takagi and at the same time, temporarily cordoned off the scene.

“……”

When Officer Twilight saw that Mori Kogoro and Conan were there at the scene of the murder this time, the corners of his mouth couldn't help but twitch slightly.

However, if there are two detectives, Jiang Sheng and Maori Kogoro, Officer Twilight believes that the speed of solving the case this time will be much faster.

"Officer Twilight, this is the threatening letter sent by the murderer in advance." Jiang Sheng collected all the threatening letters in everyone's hands and handed them to Officer Dusk.

After reading the contents of these threatening letters, Officer Twilight couldn't help but wonder, "The messenger of the cursed mask? But since you've already received these threatening letters, why don't you call the police in advance? ”

Hearing this, Maori Kogoro hurriedly replied first: "Because Ms. Su Fang said that she usually receives a lot of threatening letters, so let's not make a fuss." ”

Because Maori Kogoro has always been hostile to Jiang Sheng, he has subconsciously regarded this murder case as a contest with Jiang Sheng, as a detective, of course, he has to solve the case before Jiang Sheng, only in this way can he win back the favor of Miss Yoko Okino.

"I see, so when you just came, was the door of this room really locked?" Officer Twilight nodded.

Jiang Sheng replied with great certainty: "We heard Ms. Su Fang's screams first, and then rushed over, and the door was indeed locked from the inside, so I chose to violently kick the door open." ”

Officer Twilight pointed to the door with the ventilation window in the room and asked, "Can the other door be opened?" ”

Jiang Sheng said: "According to Miss Suinami, the door was sealed several years ago, and there is no sign of damage on it. ”

Hearing this, Officer Twilight frowned and said, "In that case, this should be a murder case in a closed room!" ”

"I see!"

Maori Kogoro suddenly exclaimed with excitement, and then said with some excitement: "Officer Twilight, I have already seen through the murderer's modus operandi!" ”

"What?"

Jiang Sheng and Conan heard Mori Kogoro's words, and their faces changed at the same time, and they couldn't believe that he could see through the murderer's modus operandi so quickly.

Maori Kogoro said with a confident face: "Officer Twilight, this murder is not a murder in a closed room at all?" It's just that someone has allocated a key to Ms. Su Fang's room in advance.

As far as I know, because Ms. Su Fang has not slept well today, she will take a little sleeping pill every day, as long as the murderer uses the key to open the door, he can easily kill Ms. Su Fang in her sleep, as long as he uses the key to lock the door again, then he can disguise this place as a secret room murder case. ”

When Officer Twilight heard this, he patted Maori Kogoro on the shoulder with a smile and said, "I see, it's worthy of Maori's brother, and he saw through the murderer's modus operandi so quickly." ”

"Hahaha...... Who made me a detective? Mori Kogoro couldn't help but get a little carried away when he was praised by Officer Twilight like this.

Honami heard Maori Kogoro's reasoning, and reminded with some uncertainty: "But Ms. Su Fang's room has a total of two locks, in addition to the lock on the door, there is also a lock that must be opened from the inside!" ”

Hearing this, the appraiser on the side nodded to Officer Twilight and said, "Yes, we did find another lock at the scene, and judging from the fragments of the door connected to this lock, this lock should have been locked at that time." ”

Officer Twilight turned to Maori Kogoro and asked, "Brother Maori, do you know how this second lock was closed?" ”

"This ...... This ......"

When Maori Kogoro heard this, he was also entangled for a while.

Jiang Sheng's gaze scanned over those masks, and he found that only a small part of the masks were stained with blood, and the shape of these blood stains seemed to have some connection?

"It's ...... So that's it! ”

When Jiang Sheng simulated the arrangement of these masks in his mind, he found that only when the masks overlapped each other, the blood stains on them would form a complete pattern, and he immediately understood the murderer's modus operandi this time.

Jiang Sheng smiled: "Officer Dusk, I already understand the murderer's modus operandi!" ”

When Officer Twilight heard this, he was a little excited and said, "Really? How did the murderer kill Ms. Su Fang? ”

"Don't worry, let's do an experiment and we'll see it at a glance."

Jiang Sheng didn't rush to decrypt it, but turned his head to Officer Takagi on the side and smiled: "Officer Takagi, I have something to tell you when you come over." ”

When Officer Takagi heard this, he hurriedly came to Jiang Sheng's face, and when he heard what Jiang Sheng said, he hurriedly took someone to prepare.

After Officer Takagi had led the people to prepare everything, Officer Twilight couldn't help but ask, "Mr. Jiang Sheng, can you explain what the hell is going on now?" ”

"This is indeed a secret room, because the murderer killed Ms. Su Fang without entering the room at all, and he killed Ms. Su Fang from that ventilation window."

Officer Twilight looked incredulous, "How is this possible?" The gap in that ventilation window is less than 10 centimeters? How could the murderer use such a short dagger to pierce Ms. Su Fang's neck? ”