Xiao Ning turned a deaf ear, still staring at the chessboard with a serious face, and after a long while, he shook his head and said, "Yin Zetai, we lost." ”

"How so?" Yin Zetai sneered, "It's just the beginning ....... now"

His eyes suddenly stopped, Yin Zetai looked down at the chessboard tightly, and said with a long sigh: "Ah, we lost." ”

"You're smart." Looking at Kong Zhengran fixedly, Xiao Ning's expression didn't look like facing a child, but facing his peers.

After speaking, Xiao Ning turned his head and walked towards the door, and said lightly: "Go to Kong Chengyi's house." ”

Qian Hao was stunned for a moment, and the accumulated anger finally couldn't help but erupt, and turned to Xiao Ning and yelled: "Do you treat the case as child's play?" Came here with a lot of trouble just to play Monopoly? ”

"If you want to ask, just ask," Xiao Ning didn't look back, just beckoned to Li Ke, his lips pursed into a line, "It's just that I can't ask anything." ”

Yin Zetai's eyes followed Xiao Ning's back, he suddenly clenched his fists and followed quickly.

Half an hour later, Li Ke and Xiao Ning got out of the car and saw Yin Zetai standing lazily at the door of Kong Chengyi's house from a distance, looking impatient.

"How nice it would be to ride in my car." As soon as he saw Xiao Ning, Yin Zetai smiled wickedly.

The feeling of nausea poured out from the stomach pouch again, Xiao Ning swallowed his saliva, and said indifferently: "Aren't you afraid of being suspected if you care so much about this case?" Also, you should need a job. ”

The latter sentence was not malicious, but in Yin Zetai's ears, it was like a mockery, the corners of his mouth twitched, and he said: "What you said is that pimping, being a cowherd, and being a thug from time to time, I do still have a lot of work to do." ”

"Oh." In response politely, Xiao Ning stepped forward without interest.

Climbing up the crumbling iron staircase to the second floor, Xiao Ning once again covered his mouth and nose, the rusty smell was like blood, making him feel uncomfortable.

When the door was opened, a foul smell came over the face, and the messy room was filled with empty wine bottles, and rotten food was messily placed on the table.

His eyes fell on the corner, Xiao Ning's lips trembled slightly, and he suddenly turned around and didn't say anything.

"That's it?" Yin Zetai smacked Li Ke familiarly, and wondered: "That guy is really a policeman?" Why does it look so weird? ”

Unexpectedly, Li Ke then showed a rather understanding expression, and said sadly: "Finally found someone who feels the same way as me, brother, this guy is simply a perverted ......"

When talkers meet talkers, the eardrums in Xiao Ning's ears ach faintly.

After going downstairs, the suffocating smell finally reduced a little, Xiao Ning wiped his fingers with a handkerchief, and suddenly said: "Kong Zhengran, that child is more terrifying than you imagined." ”

Yin Zetai's expression froze, and he suddenly rushed in front of Xiao Ning, grabbed his collar with his dark fist, and pushed him against the wall in an instant.

"Do you know what you're talking about? Xiao Ran's pain, do you know? ”

"So he reminds you of when you were a kid, right?" was obviously carried by the collar, but Xiao Ning was not at a disadvantage.

After being stunned again, Yin Zetai's fist unconsciously let go, don't look over, and a trembling voice poured out: "How do you know?" ”

"I don't know," calmly straightened out his clothes, Xiao Ning finally pulled back a city, "It's just a guess, you have old wounds on your body, but with your personality and physical strength, you shouldn't get into such trouble, right?" The biggest possibility is that when I was a child, I didn't have the power to backhand. Also, the way you look at Xiao Ran's eyes is very complicated. ”

Kicking against the wall, Yin Zetai scratched his hair irritably, and replied stiffly: "In short, now that everything is solved, no matter how hard it is, I will take care of Xiao Ran!" ”

"He needs more than you think." After saying something unclear, Xiao Ning glanced at the gloating Li Ke, put his hands in his pockets, and walked away on his own.

......

"How can you bear to leave me alone and leave by yourself?" Carrying two boxes of pizza, Li Ke angrily rushed into Xiao Ning's room.

"There will be a victim." Sitting calmly in his chair, Xiao Ning didn't look back, his eyes fell fixedly on the computer screen.

Obviously stunned for a moment, Li Ke was confused, and said blankly: "Why?" ”

"Probability problem," With a few clicks of the mouse, Xiao Ning opened a form and said, "The suspect in the first case is Zhong Zhicheng, the husband of the deceased, who has an alibi at the time of his wife's death, but no alibi in the latter two cases. ”

"Isn't this a password for granted? If there are all of them, it's strange-" The voice suddenly stopped, Li Ke's eyes widened, and he was stunned: "You mean, exchange killing?" ”

Exchange homicide is a method that is not clever but can easily escape legal punishment when practiced, and two or more murderers can negotiate to let unrelated people kill the victim instead of him, so as to achieve the goal of eliminating suspicion.

"The suspect in the second case is Meng Yajing, and the third is Kong Zhengran," analyzing alone, Xiao Ning didn't see Li Ke's increasingly frightened expression, "After analyzing their alibi, it can be concluded that they are all one-sixth." ”

"Sixth?" Li Ke still didn't understand.

"It's just a simple matter of permutations and combinations, four people killing the other four people can produce ten results, excluding the similar situation of Zhong Zhicheng personally killing his wife, it can only produce six results."

Although he still didn't understand the process, the result was already clear in front of him, Li Ke tore open a piece of pizza and handed it to Xiao Ning, "So there are four murderers and four deceased?" So, can you now find out who the fourth murderer is? Can it be stopped in advance? ”

"No way," Xiao Ning waved his hand and said, "I'm disgusting and don't want to eat." ”

"Why can't it be?" Li Ke became irritable, "The amount of data is too large, or what?" That's a human life. ”

"You have already seen the fourth murderer, it is Zhong Zhicheng, Meng Yajing, Kong Zhengran, as for the fourth victim, he has already died, if nothing else, we will receive news soon."

Xiao Ning got up slowly, walked to the window and looked at the gloomy sky, his back was gloomy.

Even if you find the answer, you can only watch the passage of life weakly, the mastermind behind the scenes, seeing such a result, you should be snickering, right?

Leaning over and looking at the computer screen, the intricate data made Li Ke's head bigger, swallowed a bite of pizza, and said: "I still don't understand why the fourth deceased is dead, besides, in this case, as long as you find evidence of their connection, you can be convicted, right?" ”