After coming to the Taixi City Police Station, Lin Lei asked to talk to Director Cai about the case alone, which made Director Cai a little suspicious, but he didn't dare to disobey Lin Lei's words, so he took Lin Lei into the director's office.

After entering the office, Director Cai insisted on inviting Lin Lei to sit in the main seat, but Lin Lei didn't have time to be polite to him, so the two quickly sat on the sofa and began to talk about the case.

Director Cai had long heard that Detective Lin liked to drink espresso, so he specially found someone to buy this kind of coffee and made a cup for Lin Lei.

Lin Lei took the coffee, took a shallow sip, and said something that made Director Cai startled: "None of the four witnesses at the scene can be released, and they must all stay in the police station!"

Director Cai looked at Lin Lei with wide eyes, and after an exclamation, his mouth opened widely: "Ah-Detective Lin, could it be that these people are all murderers?

Lin Lei shook his head slowly and explained, "Not really. ”

Director Cai breathed a sigh of relief, with an embarrassed expression on his face: "Detective Lin, if there is no special reason, our police can only detain the suspect for twenty-four hours, and if the time is exceeded, the suspect must be released." ”

Lin Lei nodded, indicating that he understood: "I understand this." Twenty-four hours is enough, and when the time comes, you can release them, but within twenty-four hours, you can't let them leave. ”

Director Cai looked at Lin Lei and asked puzzledly, "Detective Lin, why are you detaining them for twenty-four hours?"

Lin Lei picked up the coffee again, took a sip, and then said in a deep voice: "In order to protect the murderer." ”

"Protect the murderer?" Director Cai was even more puzzled.

Lin Lei's face became solemn: "To be exact, it is to protect the relatives of the murderer." The murderer went to great lengths to come up with so many things, not because he was afraid of revenge - he was afraid that he had put life and death aside from the time he made up his mind to kill someone, but he was worried that his relatives would suffer retaliation from the forces behind the deceased, so he did so. ”

Director Cai is not a fool, as soon as Lin Lei explained this, he quickly understood several important information in Lin Lei's words.

First, it is obvious that among the several deceased, the one with a strong social background is Chen Yuhao, the boss of the Bamboo Union Gang. Then it is obvious that the real goal of the murderer is to kill Chen Yuhao. As for Mu Tiejun, the university's dean of academic affairs, and Zhang Zicheng, an electric bicycle dealer, they belong to the characters who lie down......

Second, the murderer designed the serial killing method of "undead car", mainly to hide the real motive for killing, and his ultimate goal, in addition to hiding himself as much as possible, was more afraid that the forces behind Chen Yuhao would retaliate against his relatives.

In this way, the whole case can be explained.

Chen Yuhao is the boss of the Taixi Bamboo Union Gang, if he is killed, with the powerful power of the Bamboo Union Gang, even if the murderer pays Chen Yuhao's life, I am afraid it will not be enough, and the relatives of the murderer will definitely attract the crazy revenge of the Bamboo Union Gang.

It's just that even the murderer didn't expect that Chen Yuhao was not only the boss of the Bamboo Union Gang, but also had a white background behind him - he was a relative of the military's top brass!

This is equivalent to saying that the murderer has offended both the underworld and the white way to death, in this case, not to mention that the murderer has no way to live, all the relatives of the murderer, I am afraid that there is no way to live......

Director Cai's face became more and more gloomy.

I didn't expect the background of this case to be so complicated!

The most important thing is that whether Zhang San is the murderer or Li Si is the murderer has nothing to do with him Director Cai - but now that the murderer has poked out such a big thing, it is simply roasting him on the fire.

At this moment, drops of sweat the size of soybeans appeared on Director Cai's head.

Because from Lin Lei's words, he faintly felt that this Detective Lin definitely didn't have a good impression of the murderer, but it seemed that Detective Lin wanted to protect the murderer's family-

This......

Seeing Director Cai's expression change, how could Lin Lei not know his thoughts?

The underworld and the white road are infernal affairs, there are some things that everyone understands, there is no need to repeat them, Lin Lei naturally understands and can't understand anymore.

Even so, Lin Lei has its own bottom line.

If Lin Lei can't control it, then it's another matter - after all, Lin Lei is not God, there are too many unreasonable things in this world, and all he can manage is just a drop in the bucket.

But as long as Lin Lei can manage it, then he will definitely not back down.

"The sin is not for the family. Lin Lei looked at Director Cai and said lightly.

Director Cai smiled awkwardly and didn't answer the question.

Even if he is the director, there is a limit to what he can do - with Chen Yuhao's powerful black and white background, Director Cai doesn't want to go to this troubled water at all.

Lin Lei saw Director Cai's head at both ends, which was also expected-this just shows that Director Cai is an emotionally intelligent person, otherwise he would not be able to sit in the position of police chief.

Lin Lei took a deep breath and said with a firm gaze: "The people in the Bentley, I will naturally take care of it." If you get him, you won't have anything to worry about......"

Since Lin Lei said that he was going to deal with the people in the Bentley car by himself, Director Cai was happy to be a favor, so he said with a smile: "That is the case, then everything is up to Detective Lin." ”

Lin Lei bowed slightly, no longer continuing the topic of "underworld and white infernal", and changed his words: "Before revealing who the murderer is, I will first solve the mystery of the 'undead car'." This little trick is worthless, but it also requires a little bit of relevant knowledge, and if you don't understand the relevant knowledge at all, you can't set up this scene. ”

Director Cai nodded again and again, he didn't want to discuss the topic of "Infernal Affairs" in depth, so he followed Lin Lei's words and asked, "Detective Lin, what do you mean......"

Lin Lei smiled slightly and said, "Don't worry, I'll explain it to you slowly." Presumably after listening to the modus operandi of the 'undead car', you should have a rough idea of who the murderer is. ”

Director Cai immediately straightened his waist and looked like he was listening.

Lin Lei glanced at him and said, "We are all people who can drive, so it's easy for me to explain - Director Cai, the cars involved in the accident are all high-end cars, right?"

Director Cai nodded and said, "Yes, the accident cars are all high-end cars." ”

Lin Lei took a deep breath and uncovered the mystery: "High-end cars generally have a function, called "automatic cruise" or "cruise control", which is mainly used on the highway and can relieve the fatigue of the driver. The cars at the scene of the accident all used the 'automatic cruise' function before the accident. ”

Automatic cruise control is a control system that allows the driver to keep the car moving at a fixed pre-selected speed without having to operate the accelerator pedal.

Director Cai is a veteran driver who has also driven countless high-end cars, and is no stranger to automatic cruise control.

"However, even with the automatic cruise function, you can only drive in a straight line......" Director Cai frowned and whispered.

As Director Cai said, the automatic cruise function is mainly used on highways, or does it need to control the steering wheel to control the direction of the car......

In other words, auto-cruise is not the same as autopilot – where you need to turn, you have to manually operate the steering wheel.

"When there is no turning, the automatic cruise function allows the car to keep moving forward, but it does not work when it needs to turn, and manual intervention is required. In these cases, the cars drove in a straight line before hitting the obstacles, but before the straight line, someone must operate the steering wheel......," Lin Lei continued.

Director Cai understood what Lin Lei meant, and asked: "In other words, after entering the final stage of hitting the wall in a straight line, after the murderer sets up the automatic cruise, he can jump from the co-pilot, right?"

Lin Lei nodded and replied, "Yes." ”

Director Cai slapped his head and said loudly: "I see! I drive every day, and I have forgotten such an important situation. ”

After a pause, Director Cai reacted suddenly: "Oh! If you can operate the car proficiently, then the murderer must be him!"

Of course, Lin Lei knew who the "he" in Director Cai's mouth was, and nodded and said, "That's right." I was suspicious of him at first, but he had no connection with the first two victims, and the motive for the murder could not be passed. It wasn't until Chen Yuhao was killed that I finally knew his intention to kill the two people in front of me, so the truth of the case came out!"

Director Cai pondered the facts of the case carefully, and found another suspicious point: "Oh, he was at the scene when the first bar crash happened! And he is the only eyewitness!"

Lin Lei nodded, frowned and said, "Well, that's true." At the time, I was just skeptical of what he said. Because there must be a motive for killing, I really don't understand why he killed Zhang Zicheng. I even wondered if he was having an affair with Zhang Zicheng's wife, so I went to spy on Tong Ling - and after investigation, I found out that he had no affair with Tong Ling, and I didn't even know ...... at all."