"I''m sorry to disturb you," the twin maid suddenly stood in the middle of the hall. "Ladies and gentlemen, there is a custom to lock the masquerade hall at midnight in this mansion."


    "Once locked, the East Wing room and the West Wing room can no longer be connected with each other, so we must ask you to go back to your room and have a rest before that. I hope you can cooperate."


    "Ah?"


    "It''s only half past eleven..."


    Gao Cheng didn''t ask Uncle Maori any more. He said strangely, "how can there be such a strange routine?"


    "The twins explained," because Schuble''s disguise is mischievous, he plays around after midnight. "


    "We have to lock them all in the masquerade room."


    "Isn''t that ridiculous?" Songping kept swallowing saliva, "it''s just nonsense!"


    "It''s true," the maid said quietly. "Every time after daybreak, the masks either tilt left and right or fall directly to the ground. It''s happened too many times in the past."


    "So please, we can start to prepare to go back to the room and have a rest now."


    "Er..."


    Gao Cheng shed a cold sweat on his forehead.


    I don''t know where Su Fang and Hongzi got the twin maids. Standing together, they are like mirror images. They have the same expression and tone. It''s not so much that they are printed in one mold as that they are divided into two by one person.


    With the topic of curse mask, the degree of strangeness has risen sharply.


    "Dada." Dongxiang room, Gao Cheng and Huiyuan go back to the room together. Next door is Maori uncle''s room.


    Gao Cheng sees the figure of Uncle entering the room, pauses, turns to Sui Naimei, the maid in the East Wing room, and asks, "where does Ms. Su Fang live?"


    Sui Naimei replied: "the teacher''s room should be regarded as the West Wing room, because only through the stairs of the West Wing room can we go to the teacher''s room."


    "Is it only over there?"


    Gao Cheng''s eyes shrunk.


    "I''m sorry, but can we have a room over there?"


    "Well? But... "Sui Naimei looks embarrassed.


    "Should there be a room available?" Gao Chengshen said, "please, I''m also thinking about the safety of teacher Su Fang."


    "Well, I''ll talk to the teacher."


    "Why?" Huiyuan watched the maid leave and said, "do you think that threat letter is true? Curse mask will suck blood tonight... "


    "If it''s true, it''s a homicide case. Even if it''s just a little bit possible, it can''t be careless, can it?" Gao Cheng goes back to his room to pack up and calmly pulls Dongye Lake out of his backpack.


    Huiyuan unexpectedly looked at Gao Cheng: "I didn''t expect that you would care so much about that lady. Did you say that you also got her help?"


    Gao Cheng stops.


    In a word, because his parents were killed in a car accident when he was very young, Gao Cheng, a city dweller in the world, has always been dependent on his grandfather. He is barely an orphan in a car accident.


    "I just don''t want to have a homicide," Gao Cheng said. "Although my parents also died in a car accident, I have nothing to do with Ms. Su Fang, and I''m not an orphan. Since I was a child, my grandfather took care of me."


    "Oh?" Huiyuan is silent. Gao Cheng''s situation is almost the same as her. Now she is all alone. It''s good if she goes on like this all the time.


    If only there were no dangerous and terrible organization to watch


    "Detective Chenghu," Sui Naimei went outside and warned, "the West Wing room is ready."


    "Thank you. We''ll be right there."


    Gao Cheng nods, thanks Sui Naimei, and goes to the west chamber with his luggage.


    Almost all of the guest rooms are on the second floor. On the first floor, there are mainly activity rooms and servant rooms. People from Su Fang Hongzi performing arts company usually live on the first floor, and only Su Fang Hongzi lives on the third floor.


    When Gao Cheng and Huiyuan moved to the new room, Su Fang and Hongzi had fallen asleep completely, and it was hard to disturb them.


    Huiyuan knew that Gao Cheng was going to guard the stairs on the third floor tonight. He said strangely, "if you''re worried about something, there should be a better way?"


    "Yes, yes. It''s OK to investigate all the people in the villa or let me be a bodyguard, but I''m just a guest. What''s the best way? Just try your best. Besides, Ms. Su Fang is more willing to believe in psychics. "


    Gao Cheng shakes his head. He has nothing to do with Su Fang and Hongzi. Too much is better than too much. Instead of getting Su Fang and Hongzi''s gratitude, he will arouse resentment.


    Little by little, with the clock striking midnight, the two doors of the mask hall were locked at the same time, and the East and West rooms were completely separated.


    Gao Cheng and Huiyuan keep watch in the dark by the stairs on the third floor.


    Almost all the others had rested, there was no sound in the corridor, and no one knew they were hiding here.


    "It''s so late, isn''t it a prank?"


    Gao Cheng yawned and looked tired.


    If you catch cold in such a cold night, it will be troublesome


    Looking at the Huiyuan wrapped in his coat, Gao Cheng said in a small voice, "Xiao AI, go back to sleep first. I''ll be enough here."


    Huiyuan didn''t start, just buried his head in his arm and asked softly, "Chenghu, how can you choose to be a private detective? Most people should be able to get into a good university, right


    "How can you be a detective?" Gao chengleng said, "at the beginning, of course, it was to make money."


    "Making money?"


    "Yes, there''s only one detective agency left. I don''t know what to do if I''m not a detective."


    Gao Cheng rubbed his nose awkwardly: "but now in addition to making money and fame, I feel that I can''t do without this profession. Occasionally, I can help people who are in trouble and constantly look for the truth. Well, it''s more appropriate to look for people''s hearts..."


    "Ah Choo." Huiyuan sneezed and fell asleep next to Gao Cheng.


    “……”


    "I just started to say..."


    Gao Cheng has no choice but to look at Huiyuan and return to the stairway.


    There''s no reason. Uncle Maori and Conan come together. With so many strange situations, how can nothing happen?


    Is it really just a prank? Or is it influenced by his butterfly effect?


    "Shaw''s mask is gone!" There was a sudden movement in the mask hall. Uncle Maori''s loud voice immediately attracted Gao Cheng''s attention, and even Huiyuan was awakened.


    "What''s the matter?"


    "I don''t know. It seems something happened."


    Gao Cheng goes to the locked mask hall, but suddenly a strange noise comes from the third floor of the concentration room.


    There was a deep cry and the sound of something falling


    Gao Cheng''s eyes suddenly tightened.


    "Is it... No?"


    On the third floor of the west chamber, Su Fang''s room is locked tightly. However, Gao Cheng is still held by something. He knocks on the door without any response, and the air window on the door can''t see the situation clearly.


    "Miss Su Fang!"


    After breaking the air window with a wooden knife, Gao Cheng sets up a platform and looks inside. In the dim light, he can only see Su fanghongzi lying on the bed, surrounded by scattered Shaw bull masks and blood from the bed


    "Chenghu!" Uncle Maori and others came in a hurry, "how about it? What about Ms. Su Fang? "


    Gao Cheng shook his head: "call an ambulance first, and call the police by the way."


    "Brother Chenghu," Conan said anxiously, "let me go in from there and see what''s inside first."


    "Be careful."


    After clearing the broken glass, the air window is just enough for children''s Conan to enter. In order not to let Conan scratch, Xiaolan also carefully spread a tablecloth.


    But even if he didn''t go in, Gao Cheng also knew that Su Fang''s red son was basically hopeless.


    The smell of death has long been mixed with the mask of bloodthirsty. He clearly feels that Su fanghongzi in the room has no breath


    Just why?


    He had been guarding the stairway, making sure that no one was near Ms. Su Fang''s room.


    And those masks, clearly locked in the mask room, why did they appear at the scene of the murder


    It''s a hell of a thing to be killed like this.


    ……


    In the early hours of the morning, officer Mu Mu, who had received the report, rushed to the villa. When he saw Uncle Maori, his face collapsed.


    "Really, why don''t you inform the police immediately when you receive a threatening letter?"


    "Well," Uncle Maori said with a dry smile, "because Ms. Su Fang said that she often receives such threatening letters, so she doesn''t need to make a fuss, so..."


    In the room, the identification personnel are still taking photos, and the scattered masks remain intact.


    Gao Cheng stood in a corner of the room, frowning to observe the scene.


    According to the uncle, someone suddenly called them on the inside line, and then found that all the Schuble masks in the masquerade hall had disappeared.


    Then came the strange noise from the third floor.


    It should be Su Fang''s scream of red son and the scattered sound of these brush Lala masks.


    Someone killed Su fanghongzi at that time, but the key to the problem was that the only door that could enter Su fanghongzi''s room was locked and no one came near.


    Considering the structure of the east wing and the west wing, there is almost no possibility for the people in the west wing to commit crimes. However, the east wing is also unable to enter Su Fang''s room because the door leading to the East Wing next door was sealed with nails long ago.


    The only problem is the fence board above the door. If it is removed, it should be able to get in and out. However, the police have just checked that the fence board can''t be removed, and each board can''t even pass through with one hand


    "When you came, the door was locked from inside, right?" Mu Mu stood at the door and asked.


    "Yes, and there are two locks," explained uncle Maori. "The first one who came was Chenghu. After breaking the air window and letting Conan into the room, it was confirmed that Ms. Su Fang had been killed."


    "Two locks?"“ It''s said that Ms. Su Fang has two locks when she goes to bed. One is the door lock, and the other is the padlock prepared in addition. " Mu Mu strange way: "why should two locks?"“ According to her secretary, Miss Inaba, when she asked the psychic to seal the mask and curse, she once ordered several rules to be strictly observed by Ms. Su Fang, one of which was to lock the bedroom door twice. " Gao Cheng said in a voice: "officer Mu Mu, it seems that Ms. Su Fang has been in the habit of taking sleeping pills recently because she often suffers from insomnia. There is no trace of struggle on her body, which indicates that she has also taken sleeping pills today... That is to say, this is an impossible murder in a secret room."“ There''s no way the chamber of Secrets homicide? "“ The door leading to the next bedroom was sealed with nails a few years ago. The lattice board on it couldn''t even pass through one arm. The two windows in the room were sealed. There was no abnormality. The only door that could get in and out was locked from the inside again... "Gao Cheng looked at the lock, raised his elbow and said in a deep voice:" the murderer can''t get in and out of this room, In the past, most of the events in secret rooms were locked from the outside, but this time, it''s impossible to lock the padlock from the outside, and the most important thing is... "What''s the most important thing Mu Mu Leng Leng, looking at Gao Cheng, who suddenly stops after hanging his appetite, "speaking up, brother Chenghu, how can you be the first to arrive at the scene?"“ Because I''ve been guarding the stairway, "Gao chengning said." in case, Xiao AI and I moved to the West Wing room, and after the mask hall was locked at midnight, we were watching here all the time. "“ What? " The eye evening startles a voice anxiously way, "that you have found what?"“ No, but I''m sure no one has been close to this side since, and no one has been close to the masquerade hall Gao Cheng shakes his head and looks back to the door connecting the bedroom of the East Chamber next door. To get rid of the preconceived influence, the uncertain situation is the East Wing room. The Maori family on the second floor can''t be the murderer. Only lanchuan Dongya, who lives on the first floor, and Sui Naimei, one of the twin maids, are left. Sui Naimei and uncle are together when Su Fang Hongzi screams, and the suspect is only lanchuan Dongya. If there is no accident, the killer is Lan Chuan Dongya, that''s right. If you think about it carefully, the murderer made an inside call to Uncle Maori before the incident, which was suspicious. It was as if he wanted uncle to confirm that the mask hall was locked. If he didn''t happen to be guarding the stairway with Xiao AI, all the people in the West Wing room would be suspects. It''s very possible that the murderer was in the East Wing room. The problem is how to kill people. How did the killer do it A police officer returned to the scene, "we have searched all around the house, and there is no trace of the murderer in and out of the snow nearby."“ Well, "Mu Mu Mu never met such a difficult problem. He frowned and pondered," the problem now is that the murderer can''t even get in and out of this room. In addition, the younger brother of the city household has been guarding the door, so no one can kill Ms. Su Fang... "" hum, "Uncle Maori glanced at Gao Cheng," I think you probably took a nap, so you didn''t notice the murderer. " Then the uncle turned to Mu Mu and said, "officer, no matter what, if you want to go to Ms. Su Fang''s dormitory on the third floor, you can only go through the stairs of the West Wing room. Before the incident, the two doors of the masquerade hall in the middle of the East and West Wing rooms were locked, so you can''t pass each other, so the murderer is the one who lives in the West Wing room today." Mu Mu frowns more deeply. If he chooses between Maori and Gaocheng, I don''t know why he is more willing to believe Gaocheng. But now we can only follow uncle Maori''s idea. Otherwise, will it be written in the report that Su fanghongzi was cursed and killed“ "Chenghu," Conan said to Gao Cheng, "are you really staring at this side all the time?" Gao Cheng''s attention turns to the scattered masks at the scene, and he doesn''t want to know the murderer''s technique any more. Uncle may begin to suspect that he is the murderer: "no one can hide from me, at least not here, and I''m more sure that the murderer lives in the East Wing room."“ "The East Chamber?" Conan was surprised“ Don''t you notice? " Gao Cheng said with a smile, "why did the killer call your room before killing? It has nothing to do with the name of uncle and detective. No matter who lives in the East Wing room, they will receive a phone call. The other party just needs a piece of testimony. "“ Testimony? Can we say... "Yes, the mask hall was locked at the time of the incident, and it was the man from the West Wing room who committed the crime“ Now I''ve been staying at the stairway. Instead, I''m the most suspicious and the most able to prove everyone''s innocence. I don''t know how the killer will feel when he knows. " Gao Cheng has a cold sweat on his face, but the corners of his mouth turn up slightly“ However, after the murderer is locked, the criminal tactics will be untied by me sooner or later. "