Criminal Investigation Notes

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

With the passage of time, the rain gradually stopped and the wind became smaller. After the typhoon, the island was shrouded in a faint mist, as if in a cloud of smoke.

Among the happy hostels on Nansha Island, the day has just begun.

Uncle Wang looked out from the floor-to-ceiling windows in the living room. From this angle, you can see that the cake house with colorful lights in the past is only the front hall, and the back part has been burned into a mass of scorched ruins.

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

Those are all living people, talking and doing things at night, and in the early morning, they are buried in the explosion and fire.

That family is like being cursed, and is frequently dependent on death.

Uncle Wang lives so close, he knows more or less the secret of the cake house.He also once noticed that some guests behaved strangely. The housekeeper of the hotel had found some balloons in the room while cleaning.He always wondered whether the disappearance of the girl before was also related to the cake house.

The people in the village talked a lot about the cake shop, but everyone was tacitly talking about it. The reason was no other. Everyone had no hatred with money.

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

Even, Uncle Wang was scared in his heart and hoped that the cake shop's business would be better.

Thinking of this, Uncle Wang sighed long.

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

The cake shop has been destroyed, but the lives of the people on the island have to go on.

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

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

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

At eight o'clock in the morning, the typhoon had passed through the border, but communications had not yet resumed.

The islanders on the island should have 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 past few years, there have been two distinct worlds up and down the cliff. Although there are contacts, they do not interfere with each other.

Several people in the hotel didn't sleep well last night.

In the early morning, when Qiu Lan woke up, she found that the girl woke up some time ago. She was wearing a compassionate shirt that Qiu Lan gave her, lying next to the hotel window, staring blankly at the burning cake house. Of the ruins.

Qiu Lan walked over and looked in that direction, where the girl used to be.Qiu Lan touched the girl's hair, and the girl turned around to look at her. The little girl's big eyes were still swollen and looked very pitiful.

Qiu Lan felt sorry for this girl, fearing that she would catch a cold, and brought her a red coat and a pair of cropped trousers. Li Ting'er is not very old, but her neck is slender and her height is not low. Although Qiu Lan is an adult, she is not taller than her. How much higher.

The girl put on Qiulan's clothes, which were only slightly larger, and a hoodie had the effect of a cloak.Reminiscent of Little Red Riding Hood in the forest.

After eight o'clock in the morning, the two took the girl downstairs to have breakfast.

When passing by the hall, the two girls looked out. The plants outside had already been blown to each other by the typhoon, and many low-lying places had been flooded, leaving traces of the typhoon raging everywhere.

Qiu Lan was a little frightened, and quickly retracted her gaze. She didn't know what the person who was still in the cake house yesterday would be burnt at this time. A scorched corpse automatically appeared in her mind, a little scared...

Li Ting'er followed them, walking with her head down, not knowing what she was thinking.

By the time they walked to the restaurant downstairs, the hotel’s breakfast was already set up. Those who were served earlier were not much styled, but they were still steaming.

Teacher Su was already sitting at the table and greeted them.

The door of the restaurant was still ajar, and they hadn't even cared about having breakfast. They just gave the girl a few samples and saw Lu Siyu and Song Wen walking downstairs.

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

Song Wen saw the two girls, and then his eyes fell on the little girl. He walked forward and said to Qiu Lan: "About the explosion last night, we still have something to ask this girl, you and Jiang Jiangneng Can't you avoid it first?"

Qiu Lan didn't watch out. Song Wen suddenly took the initiative to talk to her, and suddenly became nervous: "Ah...that...then let's take it up early and eat."

Then she discussed a few words with Jiang Jiang, and the two took the tray and went upstairs earlier.

Teacher Su stood up and said, "Are you asking something? Then should I avoid it too?"

Lu Siyu turned his head and said, "Teacher Su, you are right here. You'd better bear witness to what we asked her."

Teacher Su groaned and sat back again.

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

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

Song Wen got up and wanted to get it early, but Lu Siyu took into account the injury on his wrist and helped him get a few samples before serving himself a bowl of porridge.

Song Wen took it with his 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 in a moment of silence.It seems that everyone is gathering here to enjoy this not-so-rich breakfast.

Song Wen didn't start in a hurry. He pulled up his sleeves 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 got up so early." Then he asked again, "Are there any people...in the fire?"

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

Teacher Su said: "Then you see..."

Song Wen nodded: "Two scorched bodies were found."

Teacher Su suddenly felt that the fragrance in her hand was no longer fragrant, and Li Wan'er also widened her eyes in a little panic.

Lu Siyu was accustomed to these topics for a long time, and drank the porridge slowly and calmly.

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

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

Song Wen said, "The two corpses should be your mother, and cake master Yang Ling."

Li Ting'er lowered her head, her eyes were slightly reddish, but her expression seemed to be relieved.

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

Professor Su who was on the side heard this, "Ah".Then he looked at the girl beside him with some 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 did your mother and the cake master be 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 pure and innocent. She shook her head cowardly and said: "I can't think of anyone. I want them to die."

"Who wants them to die?" Lu Siyu tilted his head, Junxiu's face was expressionless, "I think I should ask you this question."

After hearing this, Teacher Su was shocked.

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

Lu Siyu saw the girl pretending to be confused, and he didn't want to say more, and then buried his head to enjoy the breakfast in front of him.

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

"What we found were several plastic blocks scattered in several places in the storage room. The contents inside were burnt, but it was still recognizable. It used to contain flour. I began to think it was a The container for the cake, we only wanted to understand later that the explosion was a deliberate murder. It might be a dust explosion."

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

Song Wen explained: "The essence of a dust explosion is a violent oxidation reaction. When every cubic meter of air contains 9.7g of flour, 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 diffused dust in the air, and the heat energy that causes a dust explosion, that is, an open flame."

Song Wenqing's voice continued, "That cottage should be the storage room of the cake shop. There is not much space there. Not only does it store flammable laughing gas, but also a large amount of flour, coffee powder, powdered sugar, etc. for making pastries. Dust. Dust explosions are characterized by low ignition energy, multiple explosions, and strong destructive power, not to mention that there are many other combustibles 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, "Then say... It was the fire caused by the dust explosion last night? But why do you say that this is not an accident..."

"Someone put flour in some plastic buckets filled with sand in advance, and then made a simple small mechanism. Several buckets filled with flour were hung with ropes and connected to the door of the storage room. Once someone opened it. The door, those small barrels fell to the ground, and the dust rose. At this time, as long as a small spark, it will..."

Song Wen stared at Li Ting'er closely, not letting go of any subtle expression on the girl's face, and then he made a gesture of opening his fingers, "There will be a bang, causing an explosion, and turning everything into it. For nothing."

Upon hearing this, the little girl lowered her head and pursed her lips, which was obviously a nervous movement.Such an expression naturally can't hide from Song Wen's eyes.

"Last night, there was a power outage in the cake shop. In the evening due to typhoon, wind and rain, there should have been water leaks in the storage room in the past, so 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, I want to see if the storage room is leaking. She should have taken a mobile phone or a flashlight to light it, but she didn't expect to hear a few strange noises as soon as she opened the door of the storage room. Then the fog was everywhere, and the flashlight was not bright enough to illuminate it. , Can’t see the situation clearly."

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

"It's a pity that in the middle of the night, she slept drowsy and didn't have a strong sense of prevention of dust explosions. At that time, she subconsciously took out the lighter she carried with her and wanted to light the candles. An accident happened... …"

It was just a subconscious action, such a small flame, when it met the dust, it caused a disaster.A series of violent explosions followed. The fire ignited the combustibles in the cake room storage room and caused a disaster.

In the restaurant of the hotel, it was quiet for a while, and everyone else stopped, only Lu Siyu was eating slowly.

Song Wen waited for the old and the young to digest his words. He had just described the entire incident.

Professor Su frowned and looked at the little girl sitting next to him, seemingly unacceptable. These things were done by the innocent-looking child in front of him.

If it is really a girl, then she might have planned it for a long time.

How did a ten-year-old kid execute this seemingly complicated plan?How did you think of this way of killing?Why did she kill her own mother?Why does it look so calm...

Thinking of this, the food in front of Professor Su could not be eaten at all. He took out a paper towel and wiped the corners of his mouth.

Li Ting'er was stunned for a few seconds, then looked at them and asked in a low voice: "I don't know what keg or flour, and, so it sounds, isn't this an accident?"

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

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

She looked pure and innocent, dressed in red, just like the Little Red Riding Hood in a fairy tale, but she didn't know that the indifferent and calmness far beyond her age betrayed her.

If I were to be a normal child, I am afraid I would have burst into tears at this time, I don't know how to argue.

Lu Siyu had almost eaten, and pushed the bowl in front of him to explain everything more clearly: "The power outage of the cake house last night was not an accident, but someone deliberately pulled the switch. That person is you. Well... you may be careful not to leave fingerprints, but you overlooked a little..."

They didn't think about why it was also located on the cliff. Yesterday only the cake house was affected and the power went out. But the hotel where they were staying went as usual, until Song Wen found the hidden trace...

Li Ting'er followed Lu Siyu's question and asked: "What is..."

She didn't realize that she had already revealed a flaw. People who weren't the murderer should say that she hadn't done it at this time, instead of asking where the omission was.

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 while filling the flour. You came out of the storage room and walked through the short open air. , Walked into the corridor. At this moment, the flour on your feet turned white in the rain and turned into white slime."

"You hurriedly walked 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 was running down your pants and shoes on the ground. Left a trace..."

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

Those are some white traces on the ground.

Li Ting'er looked blankly and asked, "What is this?" Her voice began to tremble.

Lu Siyu leaned against the back of the chair and said, "Your footprints." He said in detail, "The footprints you left under the electric box."

People will leave different footprints under different circumstances. These footprints can reveal the trajectory of movement and various information.

The size and the 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 stood on tiptoes there, trying to pull something, the white component in the footprints, more It can prove that she just came out of the storage room.

Lu Siyu looked at Li Ting'er: "It's a pity that although the area of ​​fire yesterday was large, it was not burned here. Your flour-stained footprints are enough to prove that the buckets that hold the flour are related to you. Last night The power outage was not an accident, but man-made... After the explosion, in a panic, you didn't have the opportunity to pull the switch back again, and you kept the switch off."

Li Ting'er may not have thought that the fire did not affect that part, nor did the typhoon blow there, leaving her footprints intact.

As long as it is a man-made plan, even if it is careful, it will leave traces.By now, relevant evidence has also appeared.

Hearing this, Li Ting'er blinked. She understood where she was missing. The girl still retorted stiffly: "I don't understand what you are talking about. I was almost burned to death by the fire last night..."

"Last night, there was a fire and smoke billowed. The cake master Yang Ling was burned to death before he even had time to escape the house. How did you, a child, get up from the bed indifferently, wearing shoes, and ran out of your room? What about?" Lu Siyu asked her.

Li Ting'er looked at Lu Siyu with those big eyes and kept silent.She is very beautiful, innocent, pure and beautiful. She looks like a little angel. It is worth describing her in all beautiful words.

Unfortunately, these are only indicative phenomena.

Lu Siyu’s voice was indifferent and ruthless, and he ruthlessly pierced her painted skin: “Because you were hiding in the front hall, and you have enough time to escape. In order to play the role of a victim, you deliberately did not Running out too early, you heard someone enter the fire, then hid under the safer table in the back kitchen, cried, and then pretended to faint."

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

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