Three weeks later, the coldest winter solstice, the day with the shortest day and longest night in the Northern Hemisphere.

At first glance, he was no more than thirty years old, and this man had a slender figure, very good facial features, and his hair was considered long among policemen. There is rarely a moment of stretching of his eyebrows, and below is a pair of cold eyes, although there is no expression to be seen, many people will subconsciously avoid his gaze. He was not very familiar with Huang Hai, he was just transferred to this sub-bureau three months ago, and he had only two meetings with him, and he had a few meetings in the canteen and shooting range.

The bureau chief handed over the case left by Huang Hai to him.

Six murders remain unsolved, three of which are as far back as 15 years ago – Liu Man, a senior high school girl who died on the roof of the library at Nanming High School in June 1995, Yan Yan, the school's director of education who died a few days later on the side of Nanming Road, and Shen Cheng, the head teacher who was once suspected of killing a female student and was later expelled from the school. Two years after his disappearance in 2002, his body was found in a jeep by the Suzhou Creek, and he had been a college classmate of Shen Ming. In 2006, Gu Qiusha, who had a marriage contract with Shen Ming, and her father Gu Changlong, were killed by Lu Zhongyue after going bankrupt - this person was Shen Ming's high school classmate at Nanming Middle School, and married Gu Qiusha after Shen Ming's death.

Huang Hai died in pursuit of Lu Zhongyue.

At the same time, he also took over a bunch of keys - he opened the door of Huang Hai's house after his death, someone must have been here recently, and the wind was blowing through the hall, and it was as cold as a refrigerator.

The small room, which had been locked, was left open.

Smell, smell of a living person. He pulled out his pistol from under his tuck, and walked silently to the door, the black muzzle of the gun, reaching into the narrow room—occasionally a particularly daring and perverted criminal would rush straight to the policeman's house.

He saw the face of a teenager.

"Is that you?"

The man's voice was crisp and bright, and he quickly put away the pistol, his eyebrows raised markedly.

He recognized the fifteen-year-old boy - name: Si Wang; Former name: Gu Wang.

"Who are you?"

Although he was wearing a police uniform and carrying a pistol, Si Wang was still vigilant, huddled by the tin cabinet, hiding something under his buttocks.

He took out his police officer card and put it in front of the young man, the police rank was the same as Huang Hai, and the photo with the steel seal was this face, and the name was printed next to it - Ye Xiao.

"Si Wang, you are really here."

"You've been spying on me?"

Ye Xiao forcibly pulled him up from the corner, and there was a copy of the file of the 1995 Nanming Road murder case, and he put it back in the safe and said: "At the memorial service of Officer Huanghai, I noticed you - six years ago, it was you who first found the jeep hiding the body by the Suzhou Creek, and this time Huanghai died in the line of duty to catch the fugitive, and it also happened because of you, right?" ”

"You're saying I killed Officer Huanghai?"

"That's not what I meant! But I'm curious, how do you have his house key? ”

"I often come to Huang Hai's house, and he gave me a bunch of keys for convenience."

Although Si Wang's expression was so calm, Ye Xiao saw some clues: "Including the key to this small room?" Si Wang, you're lying! ”

Before he came out, his colleagues had told him that Huang Hai had a small room in his house, the door was always locked, and there were many copies of case materials pasted inside.

He guessed what was going on - after Huang Hai was killed, the police did not find the private key on him, and most of them were taken away by this Si Wang, so they could enter Huang Hai's house without permission and open the forbidden area of this small room.

What is the reason why this young man did not hesitate to steal the dead man's things in order to know these facts?

Ye Xiao looked at the wall, which was still covered with shocking documents and photos. On the other wall, the word "Affirmation" is written in red letters, and nine thick lines are drawn, the latest of which actually points to the word "Siwang".

He looked at the young man in front of him suspiciously, although Si Wang's birth date had already been declared dead, he was the adopted son of Gu Qiusha and Lu Zhongyue, so it could be regarded as an indirect relationship.

There are still many case materials in the cabinet, most of which may be useless, and the scribbled handwriting left by Huang Hai is densely copied with most of the books.

Among them, it also includes the life history of the statement obtained by Huang Hai's visit for more than half a year and investigation. Ye Xiao already knew most of the content, but what was puzzling was that another murder case was recorded in the information, when Huang Hai had not yet become a policeman, and the case happened on the city's resting road-

In 1983, on a rainy autumn night, a little girl rushed to the side of the road, crying for help, attracting neighbors and police, only to find that her father had been killed.

The deceased was the director of a certain agency, surnamed Lu, and the cause of death was that his throat was cut by broken glass. There were many doubts about this case at the time, but because he made many enemies during his lifetime, and many people were killed during his "*", everyone applauded his death, and the case was hastily closed.

On the day of the crime, 13-year-old Shen Ming was also on Sabbath Road — living across the road from the murder scene.

Shenming's grandmother was a humble servant, and the two depended on each other to take care of an old intellectual's daily life. The owner lives on the first floor of the old house, while the maid lives in the basement. In the late autumn of 1995, Huang Hai went to Anxilu to conduct a field investigation and confirmed that the house where Shen lived as a teenager was actually facing the house where the murder occurred in 1983.

Ye Xiao sensitively put this information into his bag, then dragged Si Wang out of the small room, stared into his eyes and asked, "Tell me, why are you so interested in the case that Huang Hai is responsible for?" What do these dead people have to do with you? ”

"I'm sorry, I've watched too much Detective Conan! My mother runs a bookstore, and my house is full of mystery novels, and my dream is to become a criminal policeman. ”

"You're so bold, I almost thought the murderer had come in! If you hadn't sat honestly on the ground, I might have shot you in the head—" He shot the boy in the head in the shape of a pistol with his index finger and thumb, "Just kidding, I wouldn't have done that." ”

His eyes were unusually calm, as if he really had a gun in his hand, Si Wang seemed to be really scared, so he could only hand over the keychain: "I'm sorry, I won't come again." ”

Ye Xiao looked out the window at the prematurely falling night and said, "I have officially taken over the case left by Officer Huanghai. ”

"Please promise me that I will catch that evil ghost and avenge Officer Huanghai!"

"It's my calling!"

"One more request, please allow me to be your helper, I will provide a lot of useful information!"

"Like that damn video store that sent Officer Huanghai to his death?" Ye Xiao shook his head, and there was finally a slight wave in his Dead Sea-like calm gaze, "I'm sorry, I'm not blaming you - in fact, you did a good job, I should thank you for your help and bringing us one step closer to the murderer." ”

"I've said it many times, it's a friend of mine who provided the information, and you've already asked her."

"Yes, her name is Yin Yu, and I just went to look for her in the morning."

"You didn't scare her?"

Ye Xiao smiled slightly bitterly: "But she scared me!" What a wacky tomboy! She didn't cooperate with me at all, although she spoke it impeccably. ”

"Understandable, will I be able to go home?"

The young man picked up his schoolbag and walked to the door, Ye Xiao shouted behind him: "Detective Si Wang!" ”

"Are you calling me?"

"yes!" He flew the business card to the young man, "If you have anything, or need help, please feel free to call me, I am waiting for you twenty-four hours a day!" ”

Si Wang quickly got into the elevator, exhaled nervously, and reached into his pants pocket - fortunately he was not searched by Officer Ye Xiao, and there was a beaded chain hidden in his pocket, which was found from the safe in the Yellow Sea.

The bead chain is labeled, and a line of words is handwritten-

"On June 22, 1995, it was stated that the physical evidence at the scene of the murder was found in the palm of the deceased's hand."