Answer: Colleague Little F

The course of the case: The colleague followed the deceased for several days, and at the same time the wife found that someone was following the deceased, so she deliberately and deliberately lost the key, so that the colleague had the opportunity to get the key to kill the deceased, and then the colleague saw the deceased and the gangsters have a conflict on the nineth, and in the subsequent tracking, it was determined that the gangsters were also tracking the deceased, and then made a murder plan, wanting to kill the deceased by the hands of the gangsters.

So after returning home on the night of the 9th, the colleague asked his wife to make a supper for himself, and at the same time took advantage of his wife's cooking time to deliberately chase and kill the deceased in front of the gangsters, and then returned home halfway through the chase to talk to his wife, creating an alibi for himself.

The thugs who got the weapons and clothes of the pursuer also continued to chase at first, but after the deceased fled into the house, there was nothing to be done, knocked on the door for a while, realized that something was wrong, lay on the ground and peeked into the room through the crack in the door, left fingerprints at the door, heard the recording of the deceased, and saw someone knock the deceased to the ground, mistakenly thinking that he had killed him, so he hurriedly threw the kitchen knife at the door, leaving scratches on the door, trying to push everything to the person who was the first to chase the killer, and then left.

In the house, when the deceased was recording, the wife heard the recording and knew that someone was chasing the killer, but the person chasing the killer did not use the key to enter the room, the wife thought that the plan had failed, so she tricked the deceased into taking sleeping pills, but the powdered sleeping pills did not work for a long time, so the wife had no choice but to smash the deceased with the handle of a knife.

Then he tied it up, left a mark on his hand, and placed it at the door, while waiting for no movement outside the door, and quickly hid in the back room to check on the situation.

But as time passed, the wife realized that the gangsters might have really gone.

So he opened the door to check the situation, and then saw the kitchen knife thrown at the door, thinking that the pursuer had given up, so he put away the kitchen knife with a handkerchief, stabbed the deceased, threw the knife on the ground, and cooperated with the recording to create the illusion of chasing and killing to death, and then locked the door to prevent accidents, and he went back to the bedroom to take sleeping pills to make excuses for his ignorance on a cloudy day.

After his wife left, the deceased was not completely dead, and at this time, the colleague who had escaped from his wife's persuasion came to the door of the deceased's house again, opened the door with a key, and saw the deceased struggling in a pool of blood, and was seen by the deceased.

So he left his shoes outside the door, left footprints, entered the room and killed the deceased, and listened to the recording, after which he disposed of the fingerprints and left them on them again with the deceased's hands.

Then he saw the marks of the knock on the door and realized that this incident might not have been done by the thug, and the colleague who had been following the deceased for many days immediately confessed that it was the deceased's wife who tied up the deceased and stabbed him, and also confessed why he was able to get the key to the deceased's house.

It was the wife of the deceased who wanted to kill the deceased by his hand, but he did not want to kill with his own hands, so he wanted to kill the deceased with the hands of the thugs, but the thugs did not succeed, so the wife of the deceased tried to kill the deceased, but did not kill him completely.

The deceased's wife left a kitchen knife and a recording in order to blame the case on the two people who chased the killer, so the colleague fed the sleeping pill powder left by the deceased's wife into the mouth of the unconscious deceased, and then strangled him to death with a rope, and deliberately tied the body to the door frame, creating the illusion that the wife killed someone and pretended to hang herself.

In the end, the colleague who knew that he was a serious suspect put away all the kitchen knives in the deceased's house, erased the fingerprints together, and then re-stained the deceased's fingerprints and threw them into a conspicuous sewer nearby to facilitate the detection by the police.

But in the end, the door was not locked, creating the illusion that the resentful wife strangled the deceased and lied to the police.

The next day, the wife of the deceased woke up and saw the body of the deceased who had hanged herself, and was so frightened that she couldn't stand up, so she hurriedly listened to the recording again and checked the door lock.

It was determined that someone else had entered the bedroom yesterday and had set up the deceased.

After careful consideration, the wife finally called the police, and after hearing that the deceased's fatal injuries were strangulation, she confirmed that the murderer was someone else, so she lied that the door was locked, and at the same time revealed that the key had been lost, as evidence that the pursuit led to death.