Xu Yao's heart shuddered, and he immediately threw away his cigarette butt, grabbed Mo Xiaoqing, and held the bright flashlight tightly in his hand.

Mo Xiaoqing listened carefully, and indeed there were footsteps going up step by step. She squatted down without saying a word.

Who would come to this gloomy and scary wooden house so late at night?

Xu Yao motioned Mo Xiaoqing to push back, and then he stretched his body slightly and stuck his head out to look downstairs.

Sure enough, a beam of flashlight could be seen swaying back and forth at the bottom of the stairs. The man was climbing the stairs step by step.

Xu Yao helped his grandson to step back step by step, and whispered in Mo Xiaoqing's ear, "Someone is coming up."

Mo Xiaoqing was very nervous, but when she saw Xu Yao beside him, she calmed down again.

They didn't speak tacitly, but communicated by raising their eyebrows or glancing in the direction of their eyes.

In fact, during the crime, many criminals like to return to the scene after committing the crime, especially a twisted criminal, who can satisfy his psychological and perverted needs by returning to the scene.

He once again stood in the mysterious place that he had defiled, recalling the victim's struggle and despair, watching the other's life secrets disappear bit by bit. That subtle feeling is undoubtedly a very beautiful memory for the perverted criminal.

The criminal can re-experience the satisfaction and excitement brought by the crime, and at the same time can also get a sense of success.

Xu Yao thought in his heart, if the person who returned was really Chen Xinhua, could it be that she became smart after experiencing a mental illness, and now has become a perverted killer?

Hearing the footsteps getting closer and closer, Mo Xiaoqing couldn't help but grab Xu Yao's hand again. This time Xu Yao did not push it away. He listened to the footsteps silently.

Xu Yao stretched his head and looked around. They were now in the corridor. The corridor was bare and there was no place to hide. However, the stairwell could allow them to hide temporarily.

Xu Yao hurriedly pulled Mo Xiaoqing and walked towards the stairwell. We had just hidden inside when we heard footsteps on the corridor on the third floor.

Mo Xiaoqing was protected by Xu Yao, so she could only hear the noises outside from behind. She could only listen to Xu Yao's report through his eyes, "A person came up, about 1.7 meters tall, thin and tall, wearing a hat, it's hard to tell whether it's a man or a woman."

Xu Yao thought to himself, he (she) is one person, and there are two of them here. If he is not 100% sure, Xu Yao will not rush up to subdue him impulsively.

If this is really the murderer, he (she) is coming back to the crime scene, then he (she) will definitely pass by the door outside his stairwell.

Xu Yao has made up his mind that as long as this person walks outside this door, he (she) will quickly subdue him (her).

But Xu Yao and Mo Xiaoqing must cooperate together, so Xu Yao silently gestured a few movements to Mo Xiaoqing.

The meaning is: when that person approaches, Mo Xiaoqing will use the flashlight to attract his attention and create obstacles to attract his attention.

Xu Yao will attack the opponent from the side, trying to subdue him in the shortest time.

The footsteps were getting closer and closer, and the two of them were ready to go.

Xu Yao held his breath and quietly opened the door a little, and slowly stretched his head out.

A tall and slender black figure, under the illumination of the flashlight, cast a long shadow.

Hearing the footsteps getting closer, Mo Xiaoqing tried her best to hold her breath. Her palms were full of sweat, and she could hardly cover the handle of the umbrella in her hand.

From the slightly opened door, you can see that the beam of strong light is getting closer and closer, and the light spots are gathering more and more.

Xu Yao held an umbrella in both hands, and suddenly rushed out, and Mo Xiaoqing quickly followed.

Hearing the familiar sound of metal colliding and bullets being loaded,

Xu Yao rushed out and shouted loudly, "Don't move, raise your hands. "

Suddenly, a familiar scream was heard,

"Ah!"

When the light of the flashlight hit her face, Mo Xiaoqing exclaimed, "Huh? Xiaoman, why is it you?"

"Captain Xu, Xiaoqing, why are you?"

Xu Yao looked up, he was shocked, isn't this Yu Manman?

"Why are you here?" Mo Xiaoqing asked in surprise.

Yu Manman had a guilty look on her face and spoke hesitantly, "Actually, I... I know Captain Xu's temper. He doesn't like others looking for clues privately.

So, I think I'm about to find the murderer. The only thing missing is the most important key clue, so I came to the crime scene alone."

Mo Xiaoqing suddenly looked at Yu Meng with a new respect. Maybe the female police officers, after training in this kind of environment, all become as brave as cows.

Xu Yao finally spoke, "Yu Manman, what clues are you planning to look for at this crime scene?"

Yu Manman suddenly said, "Captain Xu, can you allow me to keep it a secret for now? If the direction of the investigation is wrong, wouldn't it be very embarrassing?"

Xu Yao showed a slight smile on his face. He still admired the studious and motivated police officers.

"Well, not bad. I will recommend you to my superiors when I go back this time."

Yu Manman's voice was very excited. "Really? Thank you so much, Captain Xu."

Before Yu Manman's excitement had died down, Xu Yao's face suddenly darkened. "You really took it seriously. You ran to the crime scene alone in the middle of the night. Do you want to die?

I have criticized your senior sister for this many times. Your professionalism is worthy of praise, but the prerequisite is that you have to protect your own life first."

Yu Manman was still trying to make excuses, "It's okay, Captain Xu. I won a place in the Sanda competition when I was in the police academy."

"Are you refuting me?" Xu Yao asked with a gloomy face.

Yu Manman finally calmed down and realized her mistake. "Captain Xu, I'm sorry. I know I was wrong."

Xu Yao added, "You knew you were wrong, but you still didn't leave!"

"But Captain Xu, I really want to find some clues from the crime scene."

Xu Yao finally took a step back, "How about this, you and Liu Xiaobo come together tomorrow morning."

Although Yu Manman nodded, her eyes suddenly gleamed, "How about this. I'll go with you."

Xu Yao had no choice but to allow Yu Manman to follow him and investigate the crime scene together.

"Mo Xiaoqing, try the soles we brought here." Xu Yao urged.

Mo Xiaoqing quickly opened her backpack and took out the soles that Chen Xinhua left in the room on the island before she disappeared.

She carefully placed them on the mud prints left in the corridor and was surprised to find that the match was more than 95%.

"Captain Xu, it's a very good match."