The two door locks of Ms. Su Fang's bedroom door are two different types of door locks, one is the door handle type door lock with the door itself, and the other is the ancient style padlock installed separately after inviting psychic media.

After carefully checking the door lock, the Mumu police department muttered suspiciously, "at present, the only place where the murderer can enter and leave the bedroom is this door. In addition, there is no other possibility. How did he lock the lock from the outside?"

Bai yanzhenyu was also puzzled. He touched his chin and said, "if you just turn the door lock of the door handle, you can lock the door with tools such as fishing line. The problem is the padlock."

If you want to lock such a padlock, you must first close the door, align it with the key lock hole on the door and door frame, and then pass the lock strip of the padlock through the two lock holes above.

This series of complex actions can not be completed outside the door, that is, the door lock must be locked by someone from the inside.

In this way, there was a previous problem. If the murderer locked the door inside, he went out from the inside.

If Ms. Su Fang locked the door, how did the killer enter the room, kill her, and then leave the room.

Another thing, no matter which of the two possibilities, it takes a lot of time. Instead of making the victim look like suicide, the murderer called the room to make a notice before killing. It's like deliberately attracting attention. What's the purpose of the murderer?

People are puzzled and can only continue to look for more clues, hoping to find the key to solving the case.

At this time, the forensics personnel came over with an evidence bag and reported: "officer mu, the murder weapon has been found. That's the knife."

Maori Kogoro looked at it and reminded him, "officer mu, this knife is an ornament that was put in the masked hall before."

The forensics personnel raised the evidence bag to let everyone see the situation of Chu's murder weapon and knife, and continued: "this knife was found on the bedside table, but there is a strange place, and its handle is also stained with a lot of blood."

Officer Mu looked at the murder weapon covered with blood, frowned and analyzed: "yes, it's really unusual. If the murderer held the handle of the knife to kill Ms. Su Fang, he shouldn't be stained with so much blood."

"In addition, there are several masks scattered in the bedroom, which seem to have splashed the blood of the dead."

When the forensics personnel said this, they took out an evidence bag with a mask and explained: "this is the mask that fell on the bed. According to the blood stained situation, it is very close to the dead, so there is the most blood on it."

Maori xiaowulang looked at the mask with blood stains on most of his face and guessed, "could it be a murder? Did he wear this mask when he committed the murder?"

"In that case, the murderer may leave some clues at the scene of the murder," officer Mu looked at the forensics personnel and asked, "have you checked other masks?"

The forensics personnel nodded and replied with some doubts: "I checked it, but the result was more strange. Only a little blood was stained on the mouth of other masks, and only this mask was stained with a large area of blood."

Bai yanzhenyu squatted down to check several masks and guessed: "Mumu police department, in the legend of Xiao Buer's mask curse, it is true that he ate the holder's blood. The murderer probably deliberately smeared blood on it in order to make the scene conform to the legend."

At this time, another policeman came to report the survey results near the house and found no sign of outsiders. In other words, the murderer was among the seven people in the villa.

"The Mu police department can actually further reduce the suspect of the murderer."

Maori Kouro smiled confidently and analyzed: "Ms. Su Fang lived alone on the third floor and could only enter there from the stairs of the west house. At that time, the masked Hall of the East and West rooms was locked, so Mr. LAN Chuan and miss Sui Naimei (Maid sister), who lived with us in the east room, can rule out their suspicion."

"I see."

The Mumu police department believed Maori Kogoro's reasoning and said along with his words: "in this case, the murderer is among songpingshou, piantong Zhengji, Daoye hedai, changliangyao and xiarimei naisui (Maid sister)."

"No, that's not necessarily true," Bai yanzhenyu shook his head and retorted, "since the murderer can take away the mask in the masked hall, there may be keys to the gates on both sides, and the two people in the east wing can't rule out the suspicion."

"That's true. It seems that they are all possible."

Mu Mu's police department nodded and agreed with Bai Yan Zhenyu. After investigating the scene, they gathered seven suspects and asked them about their actions at the time of the crime.

The maid sister held her sister and said, "at that time, I stayed in my room to sleep. Later, Miss Maori came and woke me up. We went to the wall next to the restaurant to get the key and open the door of the fake hall on the second floor."

Lanchuan Dongya sat obliquely on the chair and said in a deep voice, "I slept well on the first floor. Later, although I heard their voice calling Sui Naimei up, I don't think there will be any big event. As a result, it became bigger and bigger. I didn't trust it. I went to the second floor to check the situation. As a result, I found that the masks inside had disappeared."

Songpingshou, who lives in the West Wing room, also said that they were resting in the room at that time. Later, when they heard the news, they ran out to check the situation.

However, among the people in the West Wing room, Daoye and Dai did not appear at that time, which aroused the suspicion of the Mumu police department.

Rice leaf and Dai's eyes flickered slightly and explained, "I didn't hear anything outside because I drank too much wine last night and went to bed."

Maori xiaowulang thought of the entrustment given to him by Ms. Su Fang and asked piantong Zhengji, "Mr. piantong, have you met Ms. Su Fang before?"

Piantong Zhengji was a little surprised. He didn't know why Maori xiaowulang asked him this question, but he answered truthfully: "no, yesterday was the first time we met."

Maori xiaowulang scratched his head and said, "it's strange. If so, why did Ms. Su Fang entrust me to investigate your wife's car accident 20 years ago?"

After hearing Maori Kogoro's words, Conan immediately reacted. Under his reminder, everyone also knew that lanchuan Dongya's mother was the perpetrator who killed piantong Zhengji's wife.