After calming down for a moment, Gu Song called Xia Shi and asked him to inform his colleagues in the task force of the news of Xiaohai's killing. In addition, Brother Yu also made a reasonable explanation, after all, he must have an explanation for Xiaohai's death, otherwise it will be easy to cause them to misunderstand.

Within a few minutes, squatting under the residential building, the policeman in charge of monitoring Xiaohai ran upstairs in a panic. Seeing the corpse in the living room, Xiao Qin's face instantly turned pale. He stared at a pair of frightened eyes and said in disbelief, "Xiaohai was killed? How is this possible? I've been guarding downstairs, and I haven't seen any suspicious people entering or leaving the residential building......"

"You can see the window in Xiaohai's bedroom downstairs, right?" Gu Song asked.

Xiao Qin nodded, and Gu Song continued to ask, "Where did Xiao Hai go at night?" What time do you get home? Has anything unusual happened to him since he got home? ”

Xiao Qin swallowed his saliva, forcing himself to calm down, then took out a small notebook and replied methodically: "Xiao Hai went to the sauna with a friend at night, and it was 23:51 when he got home. Judging from the outside surveillance, the lights in Xiaohai's bedroom were turned on at 23:56, and the lights were turned off at 0:03 to sleep, during which nothing unusual happened, and no one had ever entered or left the residential building. ”

"Hasn't anyone ever come out of the building since?"

"Nope. From the time Xiaohai returned home until you found the body, no one came out of the building. ”

Gu Song looked at the closed window in the room, and said thoughtfully: "There is only one exit in the entire residential building facing northeast, and this exit is guarded by you. The windows used for lighting in the corridor are in the same direction as the exit, and you are also staring at them, so the murderer did not escape through these openings after the killing. Xiaohai's family lives on the fifth floor, and all the windows in the room are closed, so the murderer did not escape from the windows of Xiaohai's family. Then ......" Speaking of this, Gu Song's face suddenly became very ugly. He grabbed Xiao Qin's shoulders and asked eagerly, "Is there anyone guarding downstairs now?" ”

"There's no one outside, Xiao Jia and I take turns keeping vigil...... Xiao Qin said as he realized the problem, and a layer of cold sweat instantly broke out on his forehead.

Although he knew that it was too late, Gu Song still asked Xiao Qin to quickly block the exit of the residential building, and he searched door to door in the building.

Twenty minutes later, members of the criminal police team arrived at the scene of the crime one after another.

While the forensic doctors and investigators were busy at the scene, Gu Song recounted the incident in detail to Xia Shi and Zhao Xiaolin. Zhao Xiaolin kept crying with a sad face, feeling that the sky was about to fall.

Because Gu Song and Xia Shi shouldered a more important mission, the arduous task of capturing the Night Killer fell to Zhao Xiaolin gloriously. Although this is a bit of a duck on the shelves, the leaders and colleagues are very optimistic about him, hoping that he can perform well this time and show his true strength.

However, as a newcomer, Zhao Xiaolin's case-handling experience is not as rich as Gu Song and Xia Shi after all. After more than half a month of investigation, there is still no progress in the "4.7 Homicide Case". What he feared the most was that the Night Killer would come out to kill again, but he didn't expect the nightmare to come true, that guy not only reappeared, but also killed their informant under the nose of the police this time. Such a bold and arrogant provocation is simply the greatest insult to the police.

Seeing Zhao Xiaolin's depressed expression, Gu Song knew what he was thinking about in his heart. Taking advantage of Zhao Xiaolin's slip call, Gu Song patted him on the back vigorously and encouraged him: "Brother, cheer up." This is the last time, and we're going to catch him. ”

Zhao Xiaolin smiled bitterly, looked at Xiaohai's corpse, and said reproachfully: "It's useless to blame me." If I had caught that bastard sooner, Xiaohai wouldn't have been killed by him......"

"Forget it, don't think about the ones you don't need, it's not your fault."

"Nope." Zhao Xiaolin shook his head vigorously, "It's all because of my lack of ability to let him get away with it for so long......"

"Oh? So according to you, before you took over this case, Xia Shi and I couldn't catch that bastard, and we are also incompetent? ”

"No, I didn't mean that...... Zhao Xiaolin waved his hand again and again to explain, "Of course you and Brother Xia Shi are much better than me, I'm just, I'm ......"

"Alright!" Gu Song put his hand on Zhao Xiaolin's shoulder and smiled indifferently, "Don't talk nonsense, let's talk about some serious topics." After saying this, his expression suddenly became serious. Xiaolin, tell me, why did the Night Killer choose Xiaohai as a target? ”

Zhao Xiaolin frowned slightly, thought for a while and said, "Because Xiaohai is a member of the human trafficker gang, he colluded with the HR of Shining Media Company and kidnapped eight beautiful girls one after another. The mistakes he made were much more serious than those of Mr. and Mrs. Chow Chow. So in the eyes of the Night Killer, such a scumbag deserves to die. ”

"But Xiaohai is reforming his ways, and some time ago he also assisted the police in arresting a gang of human traffickers in Huizhou, Guangdong, even so, won't the night killer give him a chance to mend his ways?"

Zhao Xiaolin glanced at Gu Song suspiciously, and asked, "Brother Song, are you confused?" Xiaohai was secretly controlled by the police, and the things he did later were only known to the people of our task force, and the Night Killer did not know that he had repented and rehabilitated himself. ”

At this time, Xia Shi, who hadn't spoken for a long time, suddenly interjected: "So how did the Night Killer learn that Xiaohai is a member of the human trafficker gang?" In order to successfully carry out the undercover plan, the police kept the information tightly sealed. Theoretically speaking, Xiaohai's identity will not be known to outsiders. ”

"This ......" Zhao Xiaolin scratched his hair in confusion, "Could it be that any of us has leaked the secret?" ”

"I do." Gu Song picked up the conversation again, looked at everyone in the room with a distrustful look, and said slowly, "The Night Killer may be hiding among us. ”

"Senior brother, what are you talking about?" Qi Ruonan was walking towards them with a physical evidence bag. Hearing this, I couldn't help but be a little angry. "No matter how anxious you are, you can't doubt your own people casually!"

"Ruonan, what Gu Song said is right." Xia Shi hurriedly relieved Gu Song and said, "It is indeed possible that the Night Killer is among these people in the task force. So from now on, every member of the task force who does not have an alibi is a criminal suspect. ”

"To be precise, it should be a male member, and it ......" Gu Song took turns looking at Xia Shi and Zhao Xiaolin, remembering the clues provided by the nephew of the owner of the express outlet. According to Zheng Lei's recollections, the murderer's figure is not much different from the two of you. Next, I will ask Joe to queue up a detailed list of suspects and rule out your suspicions one by one. ”

"Huh?" Zhao Xiaolin was taken aback by Gu Song's words, and exclaimed, "Brother Song, you shouldn't suspect me and Brother Xia Shi, right?" We've been together for so long, don't you trust us? ”

Gu Song looked at them coldly, as if he was facing his own enemy. "At this moment, I only believe in the evidence, and I don't want to tell you anything else. Ruonan, come with me. After Gu Song finished speaking, he turned around and walked towards Ah Fei's bedroom. Qi Ruonan sighed helplessly, looked at Xia Shi and Zhao Xiaolin apologetically, and followed Gu Song into the innermost room.

Gu Song closed the door and said to Qi Ruonan expressionlessly, "Let's talk about the on-site investigation." ”

Qi Ruonan didn't respond, just pouted. After all, she is a sensual girl, and she can't accept the speculation that the murderer is hiding among them for a while.

The two looked at each other silently for a long time, but Gu Song had no intention of backing down at all, and seemed to be very firm in his judgment this time. Not only that, but he suspected that the Night Killer was hiding among the police officers who came to the scene tonight. For the kind of self-righteous guy who doesn't pay attention to the police at all, what could be more exciting in the world than witnessing his masterpiece and being involved in solving the crime?

He didn't want to doubt the brothers who were with him day and night. But the facts are in front of you, except for the people inside the task force, who will know that Xiaohai is a criminal trafficker, and then set him as the second target? Who would know that Xiao Hai was being secretly monitored by the police, and deliberately avoided Xiao Qin's sight during the entire crime?

Although Gu Song still can't tell when and where the murderer escaped. However, a search of the entire residential building revealed that the door of room 102 on the first floor had fresh signs of prying, and that the room was unoccupied. After committing the crime, the murderer may have escaped from the window of No. 102, or he may have waited for an opportunity to escape while Xiao Qin went upstairs to confirm the situation. But in either case, the murderer should have returned to the scene of the crime and blended into their team on the pretext of handling the case.

After a stalemate for a moment, Qi Ruonan "snorted" and asked Gu Song with a gambling emotion, "Senior brother, if you doubt the innocence of Brother Xia Shi and Xiaolin, then I don't believe you either." You live with Xiao Hai, and killing him is so easy for you, how do I know that you are not a thief and shout to catch a thief? ”

"It's too easy." Gu Song smiled, and his attitude finally softened. "First, I had been working in a bar when Xiaohai was killed, and many of my colleagues can attest to this. Second, my physical characteristics do not match the description of the eyewitness Zheng Lei. Third, when Zhou Tiancheng and his wife were killed, I was still recuperating in the hospital. So, I am absolutely innocent. ”