I wrapped my hand around my sleeve and picked up the key from under the tree. The chains and locks on the door of Xu Yi's house have been removed by the police as evidence and brought back to the police station, and the identification results show that multiple fingerprints were found on them, including Du Lei's.

According to the confession of the owner of the coffin shop, there should also be his fingerprints on it, so when we left the coffin shop, the police said that they had taken the fingerprints of the index fingers of the owner of the coffin shop and the employee. A criminal police officer has already sent the fingerprint traces to the identification center for comparison.

I called Jiang Jun and the criminal police, and they had already done a carpet search in and around the house, and they didn't find any keys. I brought the identification bag from the police, and after carefully packing the key, we were ready to return to the police station, and if I guessed correctly, this key should be the key that Du Lei used to open the door.

When I passed the flower shop, the old woman was sitting at the door, and I thought about it, and went in again with the mentality of luck. I pulled out a piece of paper from my pocket that was wrapped in flowers, which I had taken from the flowers at the grave of Xu Yi's parents, and I kept it on my body.

This time, the old man finally remembered, she said that she had sold a bouquet of such flowers today, and the person who bought the flowers was Xu Yi! Xu Yi grew up in the town since she was a child, and the old man knew her, no matter how bad her memory was, Xu Yi still remembered it.

My heart trembled, and the old man told me that Xu Yi had come to the store early this morning to buy flowers!

I turned around and immediately rushed up the back mountain with Jiang Jun. The detective didn't wait for us, but went back to the police station with the key for identification. I ran faster than Jiang Jun, and finally, out of breath, I stopped in front of the grave of Xu Yi's parents, where a bouquet of flowers and a few fresh fruits were placed.

I picked up the flowers, and the wrapping paper of the flowers was exactly the same as the one I found in front of Xu Yi's grave!

I clenched my fists and cursed fiercely. I had guessed that Xu Yi would come back, but because of Du Lei's death, I didn't pay attention to it anymore, Xu Yi came to worship her parents in the morning, and now, she doesn't know where she has gone.

Jiang Jun and I walked down the mountain, and if Xu Yi came back, she would definitely pass by the house. Her home was sealed by the police, and when we arrived, the seal was intact, proving that Xu Yi did not enter the house. I asked a few of Xu Yi's neighbors, and sure enough, a few of them said that Xu Yi had indeed come back early this morning!

The neighbor told Xu Yi that there had been a murder in her home, and Xu Yi's face was full of shock after hearing it. Subsequently, she told her neighbor that she would immediately go to the police station to confirm and cooperate with the police investigation. When passing by the house, the neighbors did not notice that Xu Yi was holding flowers and fruits in his hands, so Xu Yi should have passed by the house after paying homage to his parents.

I immediately called the police station, and the police told me that Xu Yi did not go to the police station to cooperate with the investigation.

This is not in line with common sense, with Xu Yi's character, there was a murder in her home, Xu Yi could not be indifferent, and would definitely go to the police station to cooperate with the investigation, but she actually left.

Jiang Jun muttered, "Could it be ...... It was Xu Yi who killed the murderer......"

I immediately shook my head, my brain was still clear, Xu Yi would not have killed Du Lei, even if she did kill someone, she would not have passed by the house and exposed her whereabouts for no reason. I sighed, maybe Xu Yi already knew that Jiang Jun and I had been to the town, so she didn't go to the police station.

I rubbed my head, after Xu Yi left, I shouldn't use common sense to figure out her thoughts. I suddenly realized that Xu Yi had become such a stranger, I always thought I knew her very well, but now that I think about it, I am ridiculous.

We went all the way out of town, and sure enough, many people found out that Xu Yi had returned, and they even greeted her. Xu Yi left the town on foot, but no one knew where she went. Jiang Jun comforted me, saying that Xu Yi would always be found, and that Xu Yi would reappear here to prove that she was not in danger.

I nodded, and after Xu Yi left the north, she reappeared in the south, and although I didn't know where she would go next, I felt that I was closer to her. I am not familiar with the police system in this place, and it is impossible to use the power of the police to search for Xu Yi.

It is very good that I can intervene in Du Lei's case.

I put Xu Yi's whereabouts aside for the time being and returned to the police station.

By the time I arrived at the police station, the results had already come out. The identification center compared the fingerprints on the coffin shop owner and the chain lock, except for Du Lei's fingerprints, the other traces on it were indeed left by the coffin shop owner. And on the key I found near Xu Yi's house, I also found Du Lei's fingerprints.

The key was indeed paired with the big lock, and the police passed the test, and the key easily opened the lock of Xu Yi's house.

I feel a headache, why does Du Lei have the key to Xu Yi's house? The key was new, and it was clear that it had just been polished. To polish the paired key, either you need to use the original key for comparison and polishing, or you need to take the big lock to the key shop for pairing.

Xu Yi's neighbors said that since we came back two months ago, the door of Xu Yi's house has never been opened.

"Professor Li, through our very detailed investigation, the owner and employees of the coffin shop are some very ordinary people, and they have no motive for committing the crime at all." The detective said to me.

I nodded, I had no way to refute it.

The criminal policeman sighed: "Professor Li, I know you are sad, but judging from the current evidence, the deceased did commit suicide, and the police are very busy, and it is impossible to investigate a suicide case endlessly." ”

I understand what the criminal police mean, once the case is determined by the police to be a suicide case, according to the regulations, the police will not file a case for investigation. The mystery of why the door was locked from the outside has been solved, all because of Du Lei's strange request, which seems far-fetched, but the confessions of so many people point to this fact.

Du Lei's marksmanship is not good, but his skills are good. There were no traces of struggle and fighting at the scene of the corpse and the corpse, and the neighbors did not hear strange sounds, in this case, no one could force Du Lei to take so many sleeping pills, the only possibility was that Du Lei really took the hundreds of pills by himself.

The pills were not bottled, but all of them were placed in Du Lei's pocket, and the appraisers also found residues of sleeping pill ingredients in their pockets.

In the face of the evidence listed by the police, I did not refute it, this is the first time. Du Lei really committed suicide......

Jiang Jun and I once again entered the morgue of the identification center, the morgue was filled with the smell of formalin, and Du Lei was still lying quietly on the morgue.

"What's going on in your head!" I couldn't control my emotions anymore and screamed heartbreakingly at the cold corpse.

"Professor Li......" Jiang Jun wanted to speak and stopped, but in the end, he still didn't come to persuade me again.

I don't understand why Du Lei committed suicide, what hurdle he can't overcome, he obviously loves Meng Ting deeply, and cares about me and Xu Yi, but why did he choose to die without even seeing us for the last time!

The coffin was sent to Xu Yi's house for a day before Du Lei chose to commit suicide, what was he thinking about that day?

Tears fell, and I seemed to see Du Lei walking around the coffin again and again, or he sat on the ground and thought about it for a whole day. He took the note in his pocket and read it over and over again, and at dawn the first rays of sunlight poured in through the window, perhaps the sun shone on him.

Du Lei is dead, and I have no way to guess his mood, but if a person chooses to die, his heart must be desperate. Maybe Du Lei felt that the sunlight sprinkled on him was cold......

I don't know how long I stayed in the morgue, but the police informed me to take Du Lei's body away, and with the help of the police, the body left the identification center. I don't know where I'm going, will I bury Du Lei?

"Professor Li, do you want to inform Meng Ting......" Jiang Jun called me from behind me.

I looked back in despair, for a long time, I nodded, I must inform Meng Ting, I must show Du Lei's suicide note to Meng Ting. But I don't know how Meng Ting would react when she learned about this bad news......