Criminal Investigation Files

The first ray of sunshine in the morning shone on the small island, and the seabirds began to wake up. They spread their wings amidst the wind and rain, and hovered over the small island.

As time passed, the rain gradually stopped and the wind became weaker. After the typhoon, the small island was shrouded in a faint mist, like a cloud of smoke and dust.

At the Happiness Hotel in South Shark Island, the day has just begun.

Uncle Wang looked out from the floor-to-ceiling windows of the living room. From this angle, he could see that only the front hall was left of the cake house that was lit with colorful lights in the past, and the back part had been burned into a mass of charred ruins.

During the typhoon this morning, two people died in the cake house due to the explosion and fire.

Those are living people, who were still talking and doing things at night, and in the early morning, they were just buried in the explosion and sea of ​​flames.

That family seemed to be cursed, and was frequently killed by relatives of death.

Uncle Wang lived so close, he knew more or less the secrets of the cake house.He also found that some guests had some strange behaviors, and the cleaning staff of the hotel found some balloons in the room when they were cleaning.He has always wondered whether the disappearance of the girl before has some connection with the cake house.

People in the village talked a lot about the cake shop, but everyone tacitly kept quiet for no other reason, and no one had any hatred for money.

The cake shop can attract tourists to this small island. If there are tourists, there will be business, and everyone's life will be easier.

Even, Uncle Wang once feared in his heart and hoped that the business of that cake shop would be better.

Thinking of this, Uncle Wang let out a long sigh.

By now, it seems that it is too late to do anything.

The cake shop has been destroyed, but the life of the people on the island continues.

This may be a bad thing, it may be a good thing.

At least, he will no longer be frightened, afraid of being implicated by the things sold or done in the cake house.

Uncle Wang got up and went to prepare breakfast for the guests as usual.

At [-] o'clock in the morning, the typhoon has already passed through, but the communication has not been restored.

The islanders on the island should have also heard the loud noise last night and saw the fire, but they did not dare to go up to the cliff to check.Over the years, the upper and lower sides of the cliff have long been two distinct worlds. Although they communicate with each other, they do not interfere with each other.

Several people in the hotel did not sleep well last night.

In the early morning, when Qiu Lan woke up, she found that the girl had woken up at some time. She was wearing a T-shirt Qiu Lan gave her, and she was lying by the window of the hotel, staring blankly at the piece of cake after the house burned. ruins.

Qiu Lan walked over and looked in that direction, which used to be the girl's home.Qiu Lan stroked the girl's hair, and the girl turned her head to look at her. The little girl's big eyes were still swollen, and she looked pitiful.

Qiu Lan felt sorry for this girl, and was afraid that she would catch a cold, so she brought her a red coat and a pair of cropped pants. Li Ting'er was young, but she had a slender neck and was not short in height. Although Qiu Lan was an adult, she was no taller than her. How much higher.

The girl put on Qiu Lan's clothes, but they were a little too big, and a hoodie looked like a cloak.Reminds me of Little Red Riding Hood in the forest.

At eight o'clock in the morning, the two of them took the girl downstairs to have breakfast together.

When passing by the hall, the two girls took a look outside. The various plants outside had already been blown upside down by the typhoon, and many low-lying places had already been flooded, leaving traces of the typhoon raging everywhere.

Qiu Lan was a little scared, and quickly looked away. She didn't know how the people who were still in the cake house yesterday would be burnt. A blackened mummy automatically appeared in her mind, and she was a little scared...

Li Ting'er followed behind them, walking with her head down, wondering what she was thinking.

When they walked to the restaurant downstairs, the hotel's breakfast had already been set. There were not many styles of those breakfasts, but they were still steaming hot.

Teacher Su had already sat at the dining table and greeted them.

The door of the restaurant was still ajar, they hadn't bothered to eat breakfast, and just brought some food for the girl, when they saw Lu Siyu and Song Wen coming down the stairs.

Early in the morning, those two people didn't know where they had been, and the corners of their clothes were still a little wet.

Song Wen saw the two girls, and then his eyes fell on the little girl. He walked up to Qiu Lan and said, "We still have something to ask this girl about the explosion last night. You and Jiang Jiang can Can't you avoid it for a while?"

Qiu Lan didn't pay attention, Song Wen suddenly took the initiative to talk to her, and immediately became nervous: "Ah...that...then let's bring breakfast to eat."

Then she discussed with Jiang Jiang, and the two of them took the tray and took the breakfast upstairs.

Teacher Su stood up and said, "Are you going to ask something? Shouldn't it be better for me to avoid it too?"

Lu Siyu turned around and said, "Mr. Su, you should stay here. We'd better be a witness when we ask her about it."

Teacher Su let out a sigh and sat back down again.

Song Wen closed the door of the restaurant, and there were only four of them in the room for a while.

The milk for breakfast is hot, and the porridge is also steaming.

Song Wen got up and wanted to get some breakfast, but Lu Siyu took care of his wrist injury and helped him get a few things before serving himself a bowl of porridge.

Song Wen took it with the other hand, and sat on the opposite side of the table with him.

The girl, the teacher, and the two policemen sat on both sides of the long table, looking at each other from a distance, and were silent for a while.It seems that everyone gathered here just to enjoy this not-so-rich breakfast.

Song Wen was not in a hurry to start. He rolled up his sleeves with his hands, and said casually: "This morning, after getting up, we went to see the scene of the fire last night."

Teacher Su was a little surprised: "No wonder... you guys got up so early." Then he asked again, "Is there... anyone else in the fire?"

Song Wen shook his head and said, "There were no other survivors of the explosion last night."

Teacher Su said: "Then you have seen..."

Song Wen nodded: "Two burnt corpses were found."

Teacher Su suddenly felt that the one in her hand was no longer fragrant, and Li Wan'er also opened her eyes wide in fear.

Lu Siyu had long been used to these topics, and he was sitting on the sidelines, drinking his porridge calmly.

After a while, Teacher Su lowered his head and sighed.

Li Ting'er raised her head and asked in a low voice, "The baker and my mother, they were all burned to death, right?"

Song Wen hummed: "Those two corpses should be your mother and cake maker Yang Ling."

Li Ting'er lowered her head, her eye circles were slightly red, but her expression seemed to be relieved.

Song Wen continued: "However...we found some traces there this morning. We suspect that the accident last night was not an accident. So, Li Tinger, can you give us some more clues?"

Professor Su who was on the side heard this and said "ah".Then he looked at the girl beside him in surprise.

"No...impossible!" Li Ting'er said these words subconsciously, and then she whispered, "I...I think the explosion this morning was very sudden, it should be an accident, why did you say that ?”

Lu Siyu suddenly stopped drinking the porridge, turned his head to look at her, and asked softly, "You don't want to know why your mother and the baker were killed?"

The girl was sitting on the high chair in the dining room, still much lower than Lu Siyu. At this moment, she raised her head, her face was full of innocence, she shook her head timidly and said, "I can't imagine, who would want them dead."

"Who wants them to die?" Lu Siyu tilted his head, his handsome face was expressionless, "I think this question should be asked to you."

After hearing this, Teacher Su was stunned.

The girl raised her eyes as if she didn't understand, and asked, "What?"

Seeing that the girl was pretending to be confused, Lu Siyu didn't want to say more, so he lowered his head and enjoyed the breakfast in front of him.

Song Wen looked at the ten-year-old girl in front of him, and continued to explain: "We originally thought that the explosion last night was an accident, but this morning, we checked the scene carefully and found some interesting things .”

"What we found was a few pieces of plastic scattered in several places in the storage room. The contents inside were burnt and burnt, but it was still identifiable. It used to contain flour. I began to think that it was made. The container of the cake, and later we figured out that the explosion was a deliberate murder, and it might have been a dust explosion."

"Dust explosion?" Professor Su was even more surprised when he heard these words, "How did this dust explosion cause?"

Song Wen explained: "The essence of a dust explosion is a violent oxidation reaction. When there is 9.7g of flour per cubic meter of air, it will explode when it encounters an open flame."

"The elements required for a dust explosion are the following: a relatively closed confined space, combustible and diffuse dust in the air, and a thermal energy source that causes a dust explosion, that is, an open flame."

Song Wen's clear voice continued, "That hut should be the storage room of the cake shop. There is not much space there, not only is there stored flammable laughing gas, but also a lot of flour, coffee powder, powdered sugar, etc. for making pastries. Dust. The characteristic of a dust explosion is that it has low ignition energy, multiple explosions, and strong destructive power, not to mention that there are many other inflammables in the storage room."

9.7g of flour per cubic meter, this number and conditions are actually very easy to achieve, and because of this, many flour mills and factories that raise dust prohibit open flames.

Professor Su frowned and said, "So...the fire was caused by a dust explosion last night? But why do you say that this was not an accident..."

"Someone put flour in some plastic kegs filled with sand in advance, and then made a simple little mechanism, hanging several kegs filled with flour with ropes, connected to the door of the storage room, once someone opened it door, those kegs fell to the ground, and the dust rose up, just a small spark at this time, it will..."

Song Wen's gaze was fixed on Li Ting'er, not letting go of any subtle expressions on the girl's face, and then he made a gesture of opening his fingers, "When the time comes, there will be a bang, causing an explosion, and turning everything into nothing. For nothing."

Hearing this, the little girl lowered her head and pursed her lips. It was obviously a nervous movement.Such an expression naturally cannot hide from Song Wen's eyes.

"Last night, the cake shop suddenly had a power outage. Because of the typhoon and heavy rain at night, the storage room should have leaked in the past. Therefore, Yan Min, the proprietress of the cake shop, has the habit of checking the storage room. She woke up in the middle of the night. Wanting to see if the storage room is leaking. She should have taken a mobile phone or a flashlight for lighting, but she didn't expect that as soon as she opened the storage room door, she heard a few strange noises, and then the fog was everywhere, and the light of the flashlight was not enough to illuminate the inside , can't see the situation clearly."

Song Wen paused at this point and looked at Li Tinger, "Just use a small bucket to fill the hut with flour. Even if you find out, you can tell your mother that this is just a prank. If your mother was calm enough at that time , she will find that the crisis is around her, and if she closes the door and goes out, the tragedy will not happen."

"It's a pity that in the middle of the night, she was sleeping in a daze, and she didn't have a strong awareness of preventing dust explosions. At that time, she subconsciously took out the lighter she carried with her and wanted to light the candles, and the accident happened... ..."

It was just a subconscious action, such a small flame, when it encountered dust, it caused a disaster.A series of violent explosions ensued, and the fire ignited the inflammables in the cake house's storage room, causing a disaster.

In the restaurant of the hotel, it became quiet for a moment, and everyone else stopped moving, only Lu Siyu was eating at his leisure.

Song Wen waited for the old and the young in front of him to digest his words. He had just described the whole incident.

Professor Su frowned and looked at the little girl sitting beside him, as if he couldn't accept that these things were done by this seemingly innocent child in front of him.

If it was really done by a girl, then she probably planned it for a long time.

How did a ten-year-old child carry out this seemingly complicated plan?How did you come up with this way of killing?Why did she kill her own mother?And why does she look so calm...

Thinking of this, Professor Su couldn't eat the food in front of him. He took out a tissue and wiped the corner of his mouth.

Li Ting'er was stunned for a few seconds, looked at them and asked in a low voice, "I don't know what kind of small bucket, what kind of flour, and, it sounds like this, isn't this just an accident?"

Song Wendao: "You can quibble or deny it, but we have found other evidence..."

Li Tinger's face turned pale suddenly, as if she remembered something, she opened her eyes wide, still pretending to be innocent, and said stiffly, "What are you talking about? I don't understand..."

She looks pure and innocent, dressed in red, just like Little Red Riding Hood in a fairy tale, but she doesn't know that this indifference and calmness far beyond her age betrayed her.

If it were a normal child, tears would have flowed down my face by this time, and I don't know how to refute it.

Lu Siyu had almost eaten, pushed the bowl in front of him, and explained everything more clearly: "Last night, the power outage in the cake house was not an accident, but someone deliberately pulled the switch, and that person was you Well...you may be very careful not to leave fingerprints, but you overlooked one point..."

They hadn't figured out why they were also located on the cliff. Yesterday, only the cake house was affected and the power was cut off, but the hotel they were staying in was as usual until Song Wen discovered the hidden trace...

Li Tinger followed Lu Siyu's question and asked, "What is it..."

But she didn't realize that she had already exposed her flaws. People who are not murderers should say that they didn't do it at this time, instead of asking where the neglect lies.

Lu Siyu licked his lips and continued: "Because you have just been to the storage room at home, you got some flour on your feet when you were dispensing flour, you came out of the storage room and walked through the short open air , into the hallway. At this moment, the flour on your feet turned white when it met the rain, and turned into white mucus."

"You hurried through the corridor without leaving too many traces, but when you stood in front of the electric box, stood on tiptoe, and carefully pulled the switch, the flour water flowed down your trousers and shoes, and landed on the ground left traces..."

Song Wen cooperated and showed Li Ting'er a photo with his mobile phone. It was taken when he and Lu Siyu were surveying the scene in the morning. Lu Siyu used a high-end camera, so he just took a random photo with his mobile phone.

Those are some white fine traces on the ground.

Li Tinger looked blankly and asked: "What is this?" Her voice began to tremble.

Lu Siyu leaned his body against the back of the chair, and said, "Your footprints." He elaborated further, "Your footprints were left under the electric box."

People leave different footprints in different situations, and these footprints can reveal the trajectory of movement and various information.

Such a size and such a pattern are enough to prove that the girl once stopped there, and the traces in front of the footprints are more obvious, indicating that she once tiptoed there, trying to pull something, and the white components in the footprints are even more obvious. To be able to prove that she just came out of the storage room.

Lu Siyu looked at Li Ting'er: "Unfortunately, although the area burned yesterday was large, it did not reach here. Your flour-stained footprints are enough to prove that those buckets of flour are related to you. Last night The power outage was not an accident, but man-made... Later, after the explosion, in a panic, you had no chance to pull the switch back, so you kept the closed state."

Li Tinger may not have thought that the fire did not reach that part, nor did the typhoon blow there, leaving her footprints intact.

As long as it is a man-made plan, no matter how careful it is, it will leave traces.Now, relevant evidence has emerged.

Hearing this, Li Tinger blinked her eyes, she understood where she made a mistake, the girl still argued stubbornly: "I don't understand what you are talking about, I was almost burned to death last night..."

"Last night, a fire suddenly caught fire and smoke billowed. The baker Yang Ling was burned to death before he could even escape from the house. How did you, a child, get up from the bed calmly, put on your shoes, and run out of your room? Where is it?" Lu Siyu asked her.

Li Ting'er looked at Lu Siyu with those big eyes and remained silent.She is very beautiful, innocent, pure and beautiful, she looks like a little angel, and she deserves all the beautiful words to describe her.

Unfortunately, these are only symptomatic phenomena.

Lu Siyu's voice was cold and merciless, mercilessly piercing through her painted skin: "Because, you were hiding in the front hall, and you had enough time to escape yourself. In order to play the role of a victim, you deliberately didn't You ran out too early, you heard someone entering the fire, and you hid under the safer table in the back kitchen, cried, and then pretended to faint."

Under layers of reasoning, the process of the crime and the evidence of the crime are all presented.

Last night, they risked their lives to rescue the culprit of the explosion from the fire.