After lunch, Xie Qing went back to the dormitory for a nap.

At nearly one o'clock, her cell phone rang. She picked it up and looked at the screen. It was Tan Yi again, so she picked up the phone.

"Hello."

"Xiao Xie, are you in the police station?"

"I'm in the dormitory."

"Come to the gate, we'll go to the old city and re-investigate the scene."

"Okay."

...

Xie Qing wanted to go a long time ago.

She immediately got dressed and went downstairs, went to the office to get the investigation box, and quickly went to the gate of the police station.

"Qingqing!" Li Ke's little head popped out from the co-pilot's seat of the police car.

Xie Qing quickened her pace, "I'm coming."

Fu Da pushed open the car door, "Xiao Xie, take my side."

Xie Qing followed suit and sat on it.

There were three people at the back, Fu Da was in the middle, and Xie Qing was next to the car door.

Du Zhun and Li Ji were not there, so no one talked much. Except for Li Ke, who was just trying to make small talk and barely chatting with Tan Yi, the others kept their eyes closed the whole time.

Thirty minutes passed quickly, and the police car stopped outside Leijia Hutong.

The group got out of the car, and just after walking a few steps, they heard the girl's intermittent and miserable crying.

Xie Qing's heart sank.

Li Ke held her elbow, "Qingqing, Lei Miao is so pitiful!"

"Yes!" Xie Qing sighed, "It's a disaster that falls from the sky. Most people can't accept it."

Fu Da said, "You have to accept it even if you can't accept it. Time will take away everything and smooth everything out."

Criminal police mostly face the ugliness of human nature and the separation of life and death of the victims. They usually live very transparently, but they are also a little heartless.

Xie Qing nodded, "Accepting what you can't accept is also a kind of destruction. Even if you accept it, it will leave a scar in your heart that is difficult to heal."

Tan Yi, who was walking in front, suddenly turned his head and looked at Xie Qing deeply.

Xie Qing didn't notice his reaction. She was thinking in her heart, after she left, how long would it take her parents and brothers to forget her?

Ten days, or half a month?

No, it may not be that short. Even if I don't miss her, I will miss the child support that is sent back at the beginning of every month.

The door of the Lei family's neighbor was wide open. The crying stopped abruptly when a group of people passed by.

Then, a thin middle-aged woman pushed a listless and pale middle-aged man out, followed by a little girl with red and swollen eyes who kept sobbing.

Lei Guang and Lei Miao were both here.

Tan Yi stepped forward and said politely, "The police will re-investigate the scene. Please rest assured that we will give them justice."

"I don't want justice! I don't want justice!" Lei Miao suddenly collapsed and pounded the door with his fists. "I just want them to come back, come back alive, wuwu..."

"Wuwu..." Lei Guang cried bitterly, snot and tears flowed down together, dripping on his thighs, and soon wet a piece.

Li Ke wiped her tears, stepped forward and held Lei Miao's hand, "Don't cry, don't hit, even if you hurt yourself, it won't help!"

In the face of such great pain, any language is pale.

Lei Miao shook his head, like a madman, crying.

Li Ke couldn't persuade Lei Miao, but fortunately she was strong and could hold Lei Miao to prevent him from hurting himself.

Tan Yi's eyes fell on Lei Guang's wife Miao Xiaohong, but it was Lei Miao who was trying to persuade them, "The dead cannot be resurrected, please accept your condolences. There are only three things you can do now. First, manage your emotions; second, think carefully about what suspicious things happened in their home before they got into trouble; third, wait for the murderer to be brought to justice."

He spoke slowly, and his baritone voice was low, which had a calming and calming effect.

Two minutes later, Lei Miao really calmed down.

Tan Yi said to Fu Da, "Brother Fu, you and Li Ke should talk to them again and persuade them. Brother Liu, Xiao Xie and I will be back soon."

Fu Da readily agreed and took out a small notebook from his handbag, "Okay, you go."

Xie Qing withdrew his gaze from Lei Guang and his wife, and followed Tan Yi to the Lei family.

The door was sealed.

The police from the grassroots police station in Xingfu unlocked the door for them, and when they pushed the door, the left door made a slight "creaking" sound.

Tan Yi went in first and turned on the incandescent light.

The blood on the cement floor had disappeared, like a bunch of indelible stains.

The three of them began to re-investigate from here - footprints and the murder weapon were the only two clues left by the murderer. There were no fingerprints on the murder weapon and no bloodstains from the murderer, so they could only work hard to study the footprints.

Xie Qing squatted on the ground, carefully examining every mark.

Because the blood on the soles of the shoes was getting less and less, the footprints at the door were the lightest. Perhaps in order to cover up the crime (to ensure that there was no blood on the soles after leaving the house), the murderer rubbed and rubbed, forming a large scratch here.

The bloody footprints at the kitchen door were very clear.

The footprints between the doorway and the first corpse were very heavy. The pattern of the soles could no longer be seen. It was dark.

Xie Qing returned to the kitchen door, swatted away a few flies, took out a magnifying glass from the investigation box, and repeatedly shone it on the clearest footprint. He also took a ruler and measured the width and length of the steps.

Liu Feng asked, "Did Xiao Xie find anything?"

"It's hard to say." Xie Qing pointed at the footprints in the air with the tip of the measuring tape, "Brother Liu, help me see if the bloodstains here are heavier, and too light here."

Liu Feng squatted and took two steps to Xie Qing's side, "The flies are still active, so I may not be able to see clearly."

This place is not close to the public toilet, and the bloodstains caused by the flying flies are not too serious, but they are not absent.

Xie Qing agreed with him, "It's okay, just take a look at it for reference."

"Okay." Liu Feng took the magnifying glass and studied the area about half an inch below the toe for three to five seconds, and then looked at the arch of the foot for more than ten seconds, "It is indeed a little bit, but this is related to walking habits. Everyone exerts force in different places."

"Okay, thank you Brother Liu." Xie Qing took back the magnifying glass and looked at the other footprints with clearer patterns. Almost every one of them was like this.

But Liu Feng was right. It was indeed too much, and it was difficult to make a judgment based on it.

Tan Yi stood up with a frown, "Xiao Xie, if your discovery is a clue, how do you think it was caused?"

Xie Qing asked instead of answering, "Captain Tan, is Lei Sheng still investigating?"

Tan Yi said, "Captain Li is investigating, but apart from the height match, we don't have any strong evidence."

"Yeah." Xie Qing knew the situation.

Liu Feng said: "You may not know that in our Anhai, 178cm is a very common height. Lei Shengzhen may be innocent."

"I think so too." Xie Qing agreed with him, "Captain Tan, what I am going to say next still lacks evidence, but it can provide another line of thought."

"Is it still about height?" Tan Yi also squatted down and stretched out his hand to Xie Qing.

"Yes." Xie Qing handed him the magnifying glass. "'The footsteps of men are more obvious, usually they land outwards, lift the foot inwards, have obvious pressure surfaces, and are centered or outwards.' But the murderer's footprints are very strange, none of the above features are obvious, and the pattern is completely different. I was wondering, if a person puts a pair of size 43, 44, or 45 feet into a size 42 shoe, how would he walk? Would he bend his big toe, lift the arch of his foot, walk with his feet splayed, or even unconsciously shorten his stride?"

Tan Yi and Liu Feng looked at her together.

Xie Qing explained, "I made this statement based on the fact that no footprints were found in the upper room. Imagine that the murderer had made a careful plan beforehand. He used a key to open the front door, took off his shoes at the door after entering, and walked into the yard in socks. As a result, the sound of the door startled Lei Youming who was getting up at night."

"Lei Youming saw someone opening the door from inside the house. It was dark and he didn't know who it was, so he went out to check. He encountered the murderer in the middle of the yard. Seeing that it was an acquaintance, the old man was relieved, but the murderer was ruthless."

"After the murder, in order to confuse us, the murderer found a pair of size 42 leather shoes from somewhere, put them on, deliberately stepped on the blood, walked over, washed off the fingerprints in the kitchen, walked to the door to change into his own shoes, and took away Lei Laotou's shoes. It was perfect."

Tan Yi did not comment, thought for a moment, and said to Liu Feng: "Brother Liu, let's change shoes."

Liu Feng is 1.77 meters tall and wears size 42 shoes, while Tan Yi is nearly 1.9 meters tall and wears size 44 shoes.

The two took off one shoe each and quickly changed shoes.

Tan Yi felt the feeling that Xie Qing described - the big toe could not be stretched out, and could only be curled up in the shoe. In order to avoid too much pain, he dared not take big steps and could not walk too fast. Only by bending the big toe and bending the arch of the foot could he feel more comfortable.

When changing back to his shoes, Tan Yi said, "Xiao Xie's discovery is very valuable. It solves the logical oddity that I thought before."

Liu Feng asked, "Captain Tan, what do you think is odd?"

Tan Yi said, "I've seen the scene and the autopsy report. The murderer did not puncture the aortas of the two elderly victims, and there was no splatter-type blood at their murder scenes. This shows that the murderer's soles could have been completely clean, but the murderer's feet were covered in blood, which is not in line with normal behavioral logic."

The reason why he wanted to re-investigate the scene was because of this problem.

Liu Feng nodded repeatedly, "If it's like what Xiao Xie said, everything will go smoothly."

Xie Qing said, "Lei Yan and Lei Youming both have size 42, and Lei Guang's shoes are at least size 43."

Tan Yi smiled, "Okay, let's go upstairs to look for leather shoes, and let Lei Miao come to identify them later to see if they are missing."

Ten minutes later, five or six pairs of leather shoes were placed at the door of Lei's house.

Fu Da and Li Ke brought Lei Miao out, and Lei Guang and his wife followed behind.

The neighbor's hostess poked her head out of the door, and when she saw Xie Qing looking at her, she quickly shrank back.

Xie Qing said, "Big sister, come out and help check if any of their shoes are missing."

As she said this, her eyes were fixed on Miao Xiaohong, who stared at Lei Miao, her knuckles starting to turn white as she gripped the wheelchair.

Was Miao Xiaohong nervous?

Xie Qing felt as if she looked down on Lei Guang and his wife, as if she had to label them as murderers.

This habit was unacceptable.

She retracted her gaze, and when she passed by Lei Guang, she glanced at him - Lei Guang was much calmer than Miao Xiaohong, and there seemed to be some expectation in his eyes.

What was he expecting, to find the murderer?

Xie Qing drew a question mark in her mind.

Lei Miao started looking for shoes, but gave up in less than a minute.

She squatted on the ground and cried loudly, "I don't recognize them. I don't recognize my dad's shoes, let alone my grandpa's shoes. My mom always said that I just need to study hard and don't need to worry about anything else. Now she's gone, and I'm like a fool. I don't know, I don't know anything, I'm trash, trash!"

The neighbor's wife hugged her distressedly and cried, "Good child, I don't blame you, I don't blame you. It's okay, grandma recognizes you, grandma recognizes you. I accompanied your mom to buy shoes, no matter old or young, I have handled most of them."

"Really?" Lei Miao stopped crying, "Thank you, grandma, thank you, grandma, then you should check quickly to see if my dad and grandpa's shoes are lost."

"Okay, I'll check it out right away." Auntie helped Lei Miao stand up, muttering, "Before the demolition, your mother lived a careful life, and the Lei family rarely bought leather shoes... Oh, there really is one pair missing."

Li Ke asked, "What kind of shoes are missing?"

Auntie said, "Lei Yan's, black leather shoes bought two years ago, with soft soles, and I saw him wearing them two days ago."

Xie Qing asked, "Should we search the homes of the relevant personnel to look for these shoes?"

"Not for now, let's go back first." Tan Yi said to Lei Guang, "Don't worry, the murderer is an acquaintance, with anti-detection capabilities, we already have a plan, we will soon find evidence and give them justice."

Lei Guang said, "That's great, thank you for your hard work."

Lei Miao was still crying.

Li Ke patted her shoulder, "Sister, be strong, you still have to take care of their funeral."

Lei Guang hurriedly said, "My niece is still young, I will take care of everything. Officer Tan, when can we do the funeral?"

Tan Yi said, "Wait for the notice, it won't take two days."

Lei Guang nodded, "That's good, the child is studying in a famous university, and he has asked for leave to come back, so he dare not delay too long."