fog city detective

Chapter 61 Death Note

Wendy has been sent home by the bodyguard, and Bobby accompanied Liang Xi to nibble on hamburgers in the detective agency to read the information.Poppy knew that Liang Xi was doing handwriting identification, but he didn't know how Liang Xi was doing handwriting identification and the needs of handwriting identification.The police material evidence appraisal personnel and the experts of the third-party appraisal agency unanimously identified the handwriting as Wen Xi's handwriting. Does Liang Xi think that he is more professional than the experts?

The materials included books, writing pads, diaries, and graffiti. Liang Xi slowly flipped through the materials, occasionally comparing the suicide notes carefully.Liang Xi was completely immersed in it as soon as he worked, while Bobby felt bored in less than five minutes and wandered around the detective agency.

The detective agency also has a back door, which is a corner iron staircase, and the entrance is at the back door of the cafe.Poppy untied the chains, pushed open the iron door, and stood on the iron stairs to breathe the fresh air.At the entrance of the iron stairs downstairs, the two standing bodyguards looked up at Poppy and continued to stand.Poppy is very strange, why did the detective agency install an iron gate that was sealed from the inside?
Who can't reason?Poppy observed the back door and found that there was no camera. After careful speculation, blocking the back door was to prevent anyone from entering the detective agency through the back door.A new question is coming, why leave a door open?Fire protection needs?

Liang Xi poured the black tea, and through the corridor, he saw Bobby in the opposite room stroking the iron door and asked, "Do you still have this hobby?"

Poppy asked, "I don't understand why this door is left?"

Liang Xi pointed to the stairs: "The width is too small to carry things."

The answer is so simple, Liang Xi said: "Don't touch it everywhere, there is an escape mechanism in that room."

Liang Xi took the hot black tea and went back to his desk to continue working. He had already guaranteed that Poppy would not come back to disturb him in a short time.As expected, Poppy was taken in and started looking for a non-existent escape mechanism.To drive away Bobby, Liang Xi can start to work.

Handwriting identification is interesting, until now computers have not been able to completely replace manual handwriting identification.Under normal circumstances, computers can do a good job of distinguishing forged handwriting from ordinary people.However, the fake handwriting made by professional experts, such as professional handwriting identification experts, is difficult for the computer to distinguish.The reason is that there are many variables in handwriting, writing posture, writing instruments, pads, light, sound, mood, etc.Both computers and humans have a certain error rate when there are two close handwritings.

Proving that the suicide note is false is more laborious than proving that the suicide note is genuine.

Liang Xi's idea is: Assuming the suicide note is true, it doesn't matter to him whether his ex-boyfriend killed Wen Xi or Wen Xi jumped off by himself.Although the ex-boyfriend won't get the medal for being brave and helping others to commit suicide, after all, it is a help.The key point is that the suicide note may be fake. From the description of the case, it is unlikely to be a premeditated murder. The police obtained the suicide note 12 hours after the incident, indicating that the suicide note was forged within these 12 hours.It is very difficult to forge a suicide note that can be authenticated by a third-party expert in 12 hours, and there is only one possibility.

……

Poppy came back an hour later: "There's no mechanism at all."

Liang Xi didn't lift his head: "You just can't find it."

Poppy: "Then I'm not looking for it either. Did you find anything?"

Liang Si looked at Wen Xi's 12th grade workbook, which is equivalent to the workbook of the second year of high school: "From this workbook, you can find obvious changes in Wen Xi. The previous homework was very neat, and then the number of homework was reduced, and the main thing was to cope with. There are two types of Xi's handwriting, the first type is this workbook, all written by himself. The second type is this one."

Liang Xi picked up the 13th grade workbook: "The handwriting is more scribbled, but it's not the point. The key point is that she copied the 13th grade homework. When you look at the handwriting, it looks very irritable and messy. The handwriting of the suicide note is neat and clear. Leave After middle school, Wen Xi hardly started writing, and if the suicide note is fake, then the reference information of the counterfeiter must be the text before grade 12."

Liang Xi said: "I need you to classify the remaining data."

Poppy quit: "I've paid for the detective."

Liang Xi said, "Do you know why I only offered one hundred?"

Poppy asked, "Why?"

Liang Xi said: "I'll ask you a question first, are you for Wendy or Wenxi or justice and truth?"

Poppy thought for a while: "Justice and truth, of course."

Liang Xi smiled: "You don't believe the conclusions of the police and the appraisal agency, but you believe the words of the eight-year-old girl. Is this the justice and truth you understand?"

Poppy chuckled: "It has something to do with Wendy too. I can't bear to see her sitting outside your door wiping tears. Since she trusts you, I hope you can give her an explanation."

Liang Xi said: "I can answer you now. The reason for asking a hundred is that you have human nature. If I am wrong, you don't need to help me."

Bobby pointed to the meter-high materials on the desk: "Are these unorganized?"

Liang Xi said: "Thank you." Hehe!
So Poppy joined the work of sorting out the data, which also made Poppy very confused. Liang Si flipped through the data very quickly, and each page only stayed for three or five seconds before turning over.Poppy asked, "Are you looking for something characteristic?"

Liang Xi: "Yes! Do you know why I am so serious?"

Bobby spreads his hands: "Because you want me to praise you for your professional detective spirit?"

Liang Xi said: "No, this suicide note is probably forged."

Poppy was curious: "Why? The experts didn't doubt the suicide note, why are you so sure?"

Liang Xi took out a silk meter ruler (one millimeter equals 10 silk meters) and a magnifying glass from the drawer, and then took the suicide note.Poppy walked to Liang Xi's side and leaned over to check.Liang Xi measured the spacing between two sentences. The spacing between the first character in the first row and the third character in the second row was about 1.7 mm, and the spacing between a character in the middle of the first row and the middle character in the second row was 1.9 mm. Left and right, the distance between the last word in the first line and the last word in the middle of the second line is about 2.1 mm.

Although the value is small and there is an error in the measurement, it can be intuitively judged that each row of Wen Xi's words is slowly sloping upwards through the silk meter ruler with the naked eye.

Poppy didn't understand: "What does that mean?"

Liang Xidao: "The spacing value of each line of the suicide note is the same. This suicide note has a total of twelve lines, and the spacing of each line is exactly the same. It is impossible for a human to do it so accurately, and only a computer can do it."

Liang Xi said: "Look at the most common word 'me' and the words that contain 'me'. There are 8 'me' in the suicide note, and there are three different types of me. The first type of me, m The writing is heavier. The second me, the e and the edge of the m touch together. The third me, the e is slightly inclined. After you list the 8 mes individually and divide them into three groups, you will find that they are exactly the same, and even overlap perfectly ."

Liang Xidao: "I basically wrote such a fake suicide note with a mechanical arm after the computer scanned the handwriting. But I can't find three kinds of me in the materials. Speaking of which, I must tell you bad news. "

Poppy asked, "What's the bad news?"

Liang Xi said: "It should be a professional who can play so delicately. It is impossible for them to leave the original text scanned. Therefore, I can only tell you that the suicide note is fake, but I can't produce any evidence to prove that the suicide note is fake."

Poppy said: "You can explain me and the distance to the police."

Liang Xidao: "The ex-boyfriend's defense lawyer doesn't need to explain why Wen Xi's suicide note has the same spacing. The police must do the work of finding evidence in the original text. Let's take an analogy, I am a criminal, and I took a copy of Wen Xi's suicide note. Xi's workbook is scanned by the computer, do you think it is possible for me to send this workbook back to Wen Xi's house after finishing the work?"

Bobby thought for a while and said, "Perhaps criminals like to add to the hype? While hiding the suicide note in Wen Xi's house, put the workbook back by the way."

Liang Xi sighed: "Since there may be such a stupid criminal, we have to read all the texts."

(End of this chapter)