"Teacher!"

After the door opened, lanchuan Dongya immediately wanted to rush to check the situation of Su Fang Hongzi, but was stopped by Bai yanzhenyu and Maori xiaowulang.

"You all stay outside. Don't come in, lest you destroy the scene of the crime. Xiao Lan, go and inform the Mu police department."

Maori xiaowulang ordered everyone to stay at the door, then ordered Xiaolan to inform the police, and then conducted a preliminary investigation in the room.

Baiyan Zhenyu went to the bedside and carefully observed Su Fang Hongzi's body. He analyzed: "the wound is on the neck. It can be said that it was killed with a knife. The means are too cruel."

After hearing Bai Yan Zhenyu's words, Pian Tong Zhengji stood at the door of the room and said in surprise: "Mr. Bai Yan, do you mean to say that this is a homicide case?"

Baiyan Zhenyu glanced back at him and said unhappily: "Mr. piantong, from the condition of the body, Ms. Su Fang can't commit suicide, so naturally she was killed by others. Don't you really think there will be any unknown masked curse?"

Songpingshou looked at the scene in the room in horror and asked, "but if it was a homicide case, what did the murderer do? The door was locked from the inside just now?"

"It's nothing difficult to understand, but it's a common secret room murder case." Bai yanzhenyu responded flatly, and then investigated carefully with Conan in the room.

"Brother Zhenyu, look here, there is a criminal statement left by the murderer."

Conan handed Baiyan Zhenyu a piece of paper he found on the floor, which was made up of cut words like the previous letters.

My curse has come true. - the messenger who curses the mask

"In this way, we can be more sure that Ms. Su Fang was killed. After all, the curse will not leave such a thing."

Baiyan Zhenyu received the letter and was ready to hand it over to the police for inspection. However, the murderer obviously had a certain anti reconnaissance meaning and should not find key clues such as fingerprints.

Soon after, the Mumu police department led a team to come. After understanding the course of the matter, some angry complained: "if you immediately call the police when you receive these threatening letters, Ms. Su Fang may not be killed by the murderer."

Maori xiaowulang sighed and regretfully explained: "because the victim, Ms. Su Fang, said that she often received such threatening letters, so we don't have to make a fuss, so we didn't inform the police. I was a little careless“

"Well..."

The Mumu police department did not continue to investigate. Looking at the masks scattered around the body, he asked, "are these masks on the ground the masks of schoble?"

"That's right," Mao xiaowulang nodded and added, "when we were in the masquerade hall downstairs, we suddenly heard a sound of things falling on the ground upstairs. Then we came up to check the situation. They should have been scattered here by prisoners at that time."

The Mumu police department went to the gate to check it and confirmed to Mao xiaowulang: "when you arrived here, the door was locked from the inside, right?"

Maori xiaowulang pulled Conan over and explained, "well, later Zhenyu broke the air window on the door and let Conan enter first. Only then did he confirm that Ms. Su Fang was dead, and then opened two door locks from the inside."

"Two locks?" the Mu police department frowned and asked, "the victim is sleeping in his own house. Why do you need two locks?"

Baiyan Zhenyu gathered together and explained: "the Mumu police department, according to miss Daoye, Ms. Su Fang's secretary, asked the psychic media to seal the mask curse, once ordered several regulations for Ms. Su Fang to strictly abide by, one of which was to lock two locks on the door of the bedroom."

"Psychic..."

As a policeman, the Mumu police department naturally doesn't believe in the so-called psychic and curse. Relying on the current clues, it speculates: "so, it's the victim who opened the door before allowing the murderer to enter the room and kill her, and then the murderer arranged it into a secret room in some way."

"Mumu police department, I don't think you think so."

Bai Yan Zhenyu shook his head, pointed to the sleeping pills on the bedside table and said, "according to miss Daoye, Ms. Su Fang has often had insomnia recently, so she has always been in the habit of taking sleeping pills. There is no trace of struggle from the body, indicating that she had fallen into a deep sleep at that time."

"If so, how did the killer get in?"

While thinking about this problem, the Mumu police department continued to investigate the scene. Suddenly, it noticed another door in the room and asked, "what's the door next door for?"

Baiyan Zhenyu had asked the maid sister in advance and quickly explained: "it is said that there is another bedroom next door, but they said that the door had been sealed several years ago. It was sealed with nails, and there was no sign of opening, so the killer certainly didn't go in and out from here."

The appraiser in the room added: "there is a lattice air window on the door. Those boards have no function of disassembly, and the gap between the boards is only five or six centimeters. You can't even reach a hand. In addition, the windows of the room are sealed."

The only door that can let people in and out has been locked from the inside without any trace of opening. The victim took sleeping pills and could not open the door by himself. The side door next to him was also nailed to death, and the window can't get in and out. It can be called a perfect secret room murder.

At this time, Conan suddenly broke in and questioned, "Uncle Maori, does Ms. Su Fang really take sleeping pills by herself?"

"Of course, she didn't eat it herself. Who fed it to her? Wait..."

Maori Kogoro was preparing to educate Conan. He suddenly thought of a possibility and said excitedly: "Mumu police department, I found out that the murderer met Ms. Su Fang in the middle of the night, asked her to drink drinks or drinks mixed with sleeping pills, then moved the dizzy Ms. Su Fang to bed to kill, and then went to the masquerade hall to get these masks and arranged the scene to curse the legendary appearance."

"I see, but brother Maori, if the murderer locked the door when he left?" Mumu police department believed Maori xiaowulang's speculation, but then asked a key question.

Maori Kogoro scratched his head, smiled awkwardly and said, "well... I don't know yet..."

However, Maori Kogoro's speculation has also cracked some of the techniques of the secret room. Next, we need to find out how the murderer locked the two door locks from the outside.