Take the reasoning of "five-guarantee households killing" as an example, some people have put it forward, should the police investigate all the five-guarantee households in Dongfang City?

Not to mention the workload of the investigation, just say that the case has happened for 20 years, and many five-guarantee households have either relocated or died, how can they be investigated?

There's no way to check ......

"The valuable point of the murder of the five guarantee households is not that the motive for the murder is a topic that is easy for netizens to 'relish', but reveals a high probability possibility of the case. Pen "Fun" Pavilion www.biquge.info"

When Lin Lei said this, Li Xiaoan and Gu Li opened their mouths wide and pricked up their ears in unison.

Lin Lei turned his gaze to Lu Yun: "What do you think?"

Lu Yun thought for a moment and said, "Ai Qing is an introverted little girl. There is an incident recorded in the file, once she was walking on the street with her classmates, and met a stranger to talk to her, and her classmate said a few words to the stranger, but Ai Qing took the classmate away, and said that she must be careful of the bad guys. This incident shows that Ai Qing is not only an introverted girl, but also very wary. ”

After a pause, Lu Yun continued: "She walked into the scene of the crime by herself. ”

"Ahh

Gu Li also looked at Lu Yun suspiciously, and asked, "Why?"

Lu Yun glanced at Lin Lei, and he didn't know if what he said was right. I saw Lin Lei smile slightly and motioned for her to continue.

Lu Yun sorted out her thoughts and said, "We already know that Ai Qing is a very wary little girl, so she is probably very vigilant when she walks alone in the evening. It is very unlikely that Ai Qing will be abducted on the street, because in the face of a very wary girl, the murderer can hardly make her lose the ability to resist instantly. ”

Gu Li was a little puzzled: "Sister Yun, if you use anesthesia, it should be okay, right? For example, in some cases, a handkerchief with anesthetic is used to cover the victim's mouth and nose. In doing so, it is possible to make the victim lose the ability to resist in a short period of time. ”

Lu Yun nodded, indicating that she understood: "Well, I have also thought about the anesthesia method, but it is still unreasonable. ”

"Why?"

"Think about it, even if you use anesthetics to numb Ai Qing, you always have a process of approaching her, right? If you are an ordinary person, then it is possible to be approached by the murderer without paying attention. But don't forget, Ai Qing is extremely wary of strangers. If someone approached her abnormally, I am sure she would not go unresponsive. There were not many pedestrians on the street on the day of the crime, and the possibility that the murderer wanted to quietly approach Ai Qing, who was very vigilant, was very low. ”

Lu Yun explained very logically, and Lu Yun didn't say "certainly", but said "the possibility is very low", and the words were also very accurate, so Li Xiaoan and Gu Li nodded again and again.

Suddenly, Li Xiaoan remembered something: "Sister Yun, I probably understand what you mean." For example, clinics, dumpling restaurants, and other shops, Ai Qing is likely to enter by himself. But the previous Liu family, that was a resident, why did we also go in to investigate?"

Lu Yun frowned slightly and set her eyes on Lin Lei.

That's what she wants to know.

Lu Yun's reasoning ability is much stronger now than before, but compared to Lin Lei, it is still a little worse.

If it is to limit the scope of the murderer, then Lu Yun is not much worse than Lin Lei. For example, the murder case in the secret room of the mountain temple, the case of choosing one out of five, Lu Yun performed very well.

Especially when Lin Lei clearly told her that the murderer must be Masaki Kawamoto, Lu Yun even deduced with Lin Lei at the same time how the murderer arranged the secret room.

But I have to admit that the kind of case of choosing one of three, one of four, and one of five is not very likely to be encountered in reality.

In a sense, the murder case in the secret room of the Yamanakaji Temple is very close to the bridge in Conan, and the scope of the murderer has been locked early on.

However, criminal investigation and solving cases are often not like that, and open-ended cases account for more than ninety percent.

In this regard, there are still many, many places where Lu Yun needs to learn from Lin Lei......

After Lin Lei glanced at everyone, he said in a deep voice: "That's right, the possibility of Ai Qing entering the stranger's house is very small, but it can't be completely ruled out. Let's say I'm talking about a situation -- "

After a pause, Lin Lei continued: "Bai Guilan fell in front of the door, or Bai Guilan needs Ai Qing's help with something, and it is possible for Ai Qing to enter Bai Guilan's house at this time." ”

Lu Yun immediately understood what Lin Lei meant, and she nodded again and again: "If there is a male master in the house, Ai Qing will probably not go in, because she is very vigilant." But if there is only one woman in the family, then Ai Qing may also go in to help. The Liu family has no men at home in the evening, Liu Hongjun has not yet gotten off work, and Liu Cheng has not yet finished school......"

Lin Lei bowed slightly: "Well, this is the reason why I entered the Liu family." According to the information, there were men in the families at the time of the crime. Ai Qing casually entered a family with a male owner, lacking evidence to support it. ”

"However, why did Bai Guilan kill Ai Qing, and what motive did they have?" asked Gu Li with a frown.

Lin Lei smiled faintly: "That's not necessarily. Maybe when Ai Qing hasn't left, Liu Hongjun or Liu Cheng went home early?"

"Hmm-" Gu Li and Li Xiaoan were confused, this possibility naturally exists, but it's not easy to say, there is no evidence for everything.

"Let's go!"

Lin Lei took a step forward and continued to walk deeper into the Closing Alley.

According to the information, Ai Qing only left school after dinner in the evening, and at this time, there are men in ordinary families.

In the entire Pingcang Lane, speaking of the residents alone, only Bai Guilan's family had no male owner at home at that time.

At this moment, a rented bookstore appeared in front of Lin Lei.

Lin Lei's brows twitched slightly, and he walked in without saying a word.

The owner of the bookstore was an old man in his sixties, hunched over, sitting by the bookshelf, calmly looking at Lin Lei.

What Lin Lei is doing, of course the old man knows it in his heart......

Lin Lei still didn't ask directly, but looked at the rented bookstore.

This rental bookstore is divided into two rooms: inside and outside.

The shop room outside is relatively large, and the bookshelves on the left and right walls are filled with various novels. Benches are placed under the bookshelves for readers to sit and read.

Lin Lei glanced at it at first, and the books on the shelves were all old and yellowed, obviously the "original" books of the year.

The bookshelf on the left is mainly composed of martial arts novels, including Jin Yong's novels, Gu Long's novels, Liang Yusheng's novels, Huang Yi's novels, and so on.

The bookshelf on the right is mainly romance novels, mainly Aunt Qiong Yao's.