Solving the case: Combining the police dog's olfactory genes at the beginning

Sitting on the sofa in front of Luo Fei at this moment was Cheng Wei's girlfriend Zhao Yi.

Zhao Yi, 22 years old, is a quiet and fresh girl.

But at this time Luo Fei looked at Zhao Yi with a solemn expression on his face, because there was also black energy on Zhao Yi's head, which meant that Zhao Yi was probably involved, but according to the concentration of black energy, Luo Fei Fei guessed that Zhao Yi was not an accomplice, but was not an ally but had a black spirit. Luo Fei could only think of one possibility, that is, Zhao Yi knew that Cheng Wei and the others murdered Cheng Zhiyou and helped them hide it.

If this is the case, Luo Fei and the others want to get the news they want from Zhao Yi, but Luo Fei doesn't think there is much hope.

"Zhao Yi, we are here this time to find out some information from you. Just tell us what you know." Luo Fei said.

"Yeah" Zhao Yi nodded lightly.

"Where were you on the night of the second day of junior high school? Who were you with?" Luo Fei asked.

"I was with Cheng Wei on the night of the second day of junior high school. The two of us went to the square to watch a performance. It was after nine o'clock when we got home. Later, Cheng Wei and I watched a movie and then fell asleep." Zhao Yibu The answer was hasty and there was no flaw in it at all.

Luo Fei was not surprised by Zhao Yi's answer. After all, since Cheng Wei dared to speak out about Zhao Yi as a witness of his alibi, it meant that Cheng Wei was sure that Zhao Yi would not tell any unfavorable news about him.

Luo Fei: "Zhao Yi, how many years have you known Cheng Wei?"

Zhao Yi: "We have known each other since we were very young."

Luo Fei: "Then what kind of person do you think Cheng Wei is?"

Zhao Yi: "Cheng Wei is a very good person to me."

Luo Fei: "Then do you know that Cheng Wei's relationship with his father is not good?"

Zhao Yi: "Well, I know a little bit."

Luo Fei: "Then do you know the reason why Cheng Wei has a bad relationship with his father?"

Zhao Yi: "Don't know? Cheng Wei never told me."

Luo Fei: "How long have you and Cheng Wei been together?"

Zhao Yi: "Four years"

After questioning Zhao Yi, Luo Fei and the others left.

Just as he left the gate of the community, Luo Fei's cell phone rang. It was Sun Jun's call.

"Team leader, I found out what you asked me to check. There are two friends who are close to Cheng Wei. One is Lin Gang and the other is Cao Dong. Lin Gang is 181cm tall and lives in Guangming Community. Cao Dong is also 174cm tall. Live in Guangming Community." Sun Jun said excitedly on the phone. According to the shoe prints found at the crime scene, the murderer was about 180cm tall. Lin Gang completely matched the characteristics of the suspect. No wonder Sun Jun looked very excited.

Luo Fei: "Well, you go to Guangming Community now, and we will meet at the entrance of Guangming Community later."

After hanging up Sun Jun's phone, Luo Fei, Wang Yong, and Zhao Cheng drove to Sunshine Community.

Twenty minutes later, the three of them arrived at Sunshine Community, where Sun Jun was already waiting.

Park the car.

"Team leader." Sun Jun walked over quickly.

Luo Fei looked at Sun Jun, then at Wang Yong and Zhao Cheng next to him, then pointed at Wang Yong and said: "Wang Yong, go get a suit, pretend to be a salesperson and go into the community to find out. Look at Lin Gang and Cao Cheng." Whether the two people in the east were at home or not, the others stayed in the car and paid close attention to the going in and out of the community."

"If Lin Gang and Cao Dong are really suspects, they must be in a tense state at this time. If there is any trouble, they may flee in fear of crime. By the way, Sun Jun, send a message to Zhang Fan and ask him to pay close attention to Cheng. Wei’s news, if there is any situation, please report it as soon as possible.”

"clear"

Wang Yong and Sun Jun nodded.

Then Wang Yong went to get clothes, and Sun Jun sent a message to Zhang Fan.

Less than ten minutes later, Wang Yong came back. He was wearing a suit and leather shoes, his hair was combed meticulously, and he was holding a stack of flyers in his hand, looking exactly like a salesperson.

"Captain, how are you?" Wang Yong asked.

"I finally understand why the captain asked you to pretend to be selling. You look so much like a salesperson." Sun Jun said with a smile.

"Okay, let's rehearse so that we don't expose the secret later." Luo Fei said.

Then there are the things that Wang Yong needs to pay attention to when he goes up to knock on the door. Luo Fei played Lin Gang and Wang Yong played the salesperson for rehearsals. After rehearsing about three or four times, Wang Yong went over to Sunshine Community after confirming that there were no problems.

Luo Fei, Sun Jun, and Zhao Cheng were waiting in the car while paying close attention to the people entering and exiting the community.

about fifteen minutes

"Team leader, Wang Yong is out." Sun Jun shouted when he saw Wang Yong walking out of the community gate. Naturally, Luo Fei saw Wang Yong immediately.

But looking at the expression on Wang Yong's face, Luo Fei frowned.

Then Wang Yong came over and Luo Fei rolled up the window.

"Team leader, I went up and saw only the families of Lin Gang and Cao Dong. Neither Lin Gang nor Cao Dong were married. They both lived with their parents. However, I didn't see Lin Gang and Cao Dong. Lin Gang Cao Dong and I are no longer at home." Wang Yong reported.

"Team leader, are you saying that after Lin Gang and Cao Dong got the money after killing someone, would they abscond in fear of crime?" Sun Jun asked anxiously.

Luo Fei frowned. The situation Sun Jun mentioned was not impossible.

"In this way, Wang Yong, you and Zhao Cheng will keep an eye on the gate of this community. If you find Lin Gang and Cao Dong, don't act rashly. Just keep an eye on them for the time being." Luo Fei ordered Wang Yong to follow him. Zhaocheng.

Then Luo Fei looked at Sun Jun and said, "Sun Jun, follow me to the bus station to have a look."

Luo Fei and the others quickly came to the bus station and checked the bus registration status of Ningjiang County in the past two days. They did not find Lin Gang and Cao Dong.

Exited the bus station.

"Team leader, where do you think Lin Gang and Cao Dong went?" Sun Jun asked Luo Fei. Luo Fei was about to say he didn't know, but received a call from Wang Yong.

"Team leader, we saw Lin Gang and Cao Dong. They just entered the Sunshine Community." Wang Yong said in a somewhat urgent voice on the phone.

"You and Zhao Cheng are watching at the door. Sun Jun and I will be there soon." After Luo Fei finished speaking, he hung up the phone, quickly got in the car, and drove to Sunshine Community.

After a while, we arrived at Sunshine Community.

"Team leader, Lin Gang and Cao Dong just entered." Wang Yong came over and said.

"In this way, Wang Yong, you and Zhao Cheng continue to watch at the gate of the community to prevent us from going up. Lin Gang and Cao Dong escape from the gate. Sun Jun and we two go up." Luo Fei ordered.

"yes"

Leaving Wang Yong and Zhao Cheng behind, Luo Fei led Sun Jun into the community.

Lin Gang is No. 223 in Building Ten, and Cao Dong is No. 936 in Building No. 8.

Luo Fei and Sun Jun went to find Lin Gang first.

Arriving at the door of room 223, Luo Fei pressed the doorbell.

"Here comes" the middle-aged woman's voice.

Then the door was opened, and a middle-aged woman about fifty years old walked out and asked, "Who are you? What's the matter?"

"We are from the criminal police team. Is Lin Gang here? We have something to ask Lin Gang and want to ask him?" Luo Fei showed his ID to the woman and answered at the same time.

When the middle-aged woman heard Luo Fei say that she was from the criminal police team, she had a nervous expression on her face.

"Comrade police, did Lin Gang do something wrong?" the middle-aged woman asked.

"We are just looking for Lin Gang and asking him something. Is Lin Gang at home?" Luo Fei didn't want to waste time talking to the middle-aged woman to avoid any unnecessary accidents.

"He just came back and is at home." The middle-aged woman answered.

Luo Fei and Sun Jun followed the middle-aged woman into the house.

"Lin Gang, come out quickly. The police comrades are here to ask you something." The middle-aged woman walked to the bedroom with the door closed and shouted.

But after shouting for a long time, there was no movement inside.

The middle-aged woman patted the bedroom door, but there was no movement.

Luo Fei realized something was wrong. He immediately stepped forward and twisted the door handle. The bedroom door was locked from the inside. Without hesitation, Luo Fei kicked the door directly.

With a "bang", the bedroom door was kicked open by Luo Fei.

Luo Fei rushed into the room immediately and saw at first glance that the window on the balcony of the bedroom was open. Luo Fei walked over to the balcony in two steps and found a sheet tied to the railing on the balcony. It was obvious that Lin Gang must have realized something was wrong and ran away.

"Call Wang Yong and Zhao Cheng and tell them that Lin Gang has run away and ask them to pay close attention to people coming out of the community." Luo Fei returned to the bedroom, talking to Sun Jun, and at the same time picked up the clothes hanger hanging in the bedroom. I took a slight sniff of the clothes I was wearing, and there was a smell that was the same as the smell at the crime scene. It must be Lin Gang's smell. Lin Gang should be the suspect who killed the deceased in the room.

Sun Jun heard this and quickly took out his mobile phone to call Wang Yong.

"Comrade police, what happened? What happened to our Lin Gang?" the middle-aged woman asked with a pale face and a cry.

Before Luo Fei had time to answer the middle-aged woman, he determined the smell on Lin Gang's body. He quickly walked to the balcony, turned over, grabbed the sheets, and slid to the bottom of the building. He felt the smell Lin Gang left in the air. Luo Fei followed the smell. Chase in the direction.

After chasing for a while, Luo Fei discovered that Lin Gang still had some brains. He actually did not escape directly from the gate of the community, but climbed out from the iron railing behind the community.

Luo Fei also climbed out of the iron railing. Lin Gang was no longer in sight. Luo Fei frowned. Although his sense of smell was very strong, once Lin Gang took a taxi, the smell molecules on Lin Gang's body would only spread. In the car, it would be difficult for Luo Fei to track Lin Gang's scent.

Fortunately, Luo Fei discovered that Lin Gang did not escape in the direction of the highway. Instead, he went along the path behind the community towards the back mountain. This made Luo Fei feel relieved and instantly increased his speed to the extreme. , chasing along the path.

Within two minutes, Luo Fei spotted Lin Gang running wildly on the path up the mountain not far away. The thick black air on Lin Gang's head and the ferocious villain were very obvious.

Lin Gang was running out of breath at this time, still holding a bag in his hand. He stopped and hunched over, breathing heavily. At the same time, he turned his head to see if anyone was chasing him, but found a figure behind him. He quickly chased towards him.

Lin Gang was shocked. He couldn't take rest at the moment, and immediately started running again. However, after running for a while, he couldn't run anymore. After all, it was an uphill road. It didn't look like he had run very far, but it was very draining of energy. Lin Gang turned around to look at the figure behind him, only to find that the person chasing him was almost catching up with him.

Seeing that he was definitely outrunning the guy behind him, and looking at it again, it seemed that this guy was chasing him. At that moment, Lin Gang had a sinister look on his face. He stopped, turned around and waited quietly for the guy behind him. The figure comes over.

Luo Fei noticed Lin Gang's actions and the sinister expression on Lin Gang's face. With Luo Fei's current eyesight, he could clearly see all of Lin Gang's actions, even every expression and movement.

Guessing what Lin Gang was thinking, Luo Fei sneered. With his current strength, Lin Gang would be desperate to fight him.

When Luo Fei was about to approach Lin Gang, Lin Gang suddenly showed a ferocious expression on his face, and then he instantly pulled out a dagger from his waist and stabbed Luo Fei fiercely.

"You can ride on your horse and die." Lin Gang yelled.

But his movements were so slow in Luo Fei's eyes.

Almost instantly, Luo Fei grabbed Lin Gang's wrist holding the knife and applied a little more force.

With a "click", Lin Gan's wrist was broken by Luo Fei. This was the grappling technique Luo Fei learned from Old Man Wu.

"ah"

The dagger fell from Lin Gang's hand to the ground, and at the same time, a shrill scream came from Lin Gang's mouth.

"I don't know whether to live or die." Luo Fei picked up the dagger on the ground and said disdainfully as he looked at Lin Gang who was screaming.

Then he took out the handcuffs and cuffed Lin Gang.

Then Luo Fei looked at the bag filled with black gas next to him. Luo Fei took it over and opened it. As expected, it was money. After looking at it, he saw that it was exactly 100,000 yuan. It should be the 100,000 yuan that was lost in the home of the deceased Cheng Zhiwei.

After thinking for a while, Luo Fei took out his cell phone and called Sun Jun directly, telling Sun Jun and the others that Lin Gang had been caught and asked them to keep an eye on Building 8 of Sunshine Community to prevent Cao Dong from running away.

Luo Fei did not let Sun Jun and the others arrest Cao Dong immediately. Although Cao Dong was friends with Lin Gang and Cheng Wei, there was currently no clue or evidence to prove that Cao Dong was also one of the criminal gangs. If the wrong person was arrested, it would still be the same. It was a very troublesome thing. Of course, the most important thing was that Luo Fei felt that Cao Dong was probably not involved in the murder of Cheng Zhiyou, otherwise there should not be only one set of shoe prints at the crime scene.

As for whether Cao Dong committed a crime together, Luo Fei will know when he sees Cao Dong.

Not long after, Luo Fei arrived at Sunshine Community and saw Sun Jun, Wang Yong and three others who were watching under the 8th building.

"Team leader, you are back. Cao Dong has never come out. He should still be in the room." Sun Jun reported to Luo Fei.

"Yes." Luo Fei nodded, then looked at Wang Yong and said, "I put Lin Gang in the car when I came here just now. You go and watch him. Don't let this guy have any accidents."

"Yes" Wang Yong replied.

"This guy is really smart. He didn't escape from the door? He just jumped out from the iron railing." Sun Jun looked surprised.

Luo Fei said calmly: "Wang Yong and Zhao Cheng should have been exposed. Lin Gang escaped from the railing before we went upstairs, otherwise he wouldn't have been able to escape." so far away."

"Yes, that should be it, otherwise Lin Gang wouldn't have to climb the railing to escape. It would be more convenient to run directly through the front door." Sun Jun nodded.

"Let's go up!" Luo Fei said.

Soon Luo Fei, Sun Jun and Zhao Cheng came to Building 8 936 and met Cao Dong successfully. Luo Fei immediately confirmed that @@Cao Dong was not the murderer because there was no black energy on his head.