"Little girl, if you can't find a clue, I don't blame you!" Zhao Yu and Miao Ying had already entered the lobby of the hotel, and he said to Cui Lizhu angrily, "However, it's your fault to talk nonsense!"

"I didn't ...... No, with my professionalism, I will never be mistaken!" Cui Lizhu still said excitedly, "Boss, after we separated today, I took a casual walk around the Golden City, and I found that all the places where my father used to go to get news are gone, it's really a thing!"

"So, I had to go to school, but although the school didn't change much, I inquired for a day, and I didn't hear anything about student suicide, so I thought, maybe the serial murder case is not about school violence, right?"

"Hmm...... Can you tell us a little bit about the point?" Zhao Yu saw that Miao Ying was also listening on her mobile phone, and hurriedly urged, "I still have something to do here!"

"Okay, good," Cui Lizhu immediately changed her tone and said quickly, "Do you remember the third crime scene of the serial murder case?

"Hmm...... What's wrong?" Zhao Yu frowned and whispered, "Your thinking is jumping enough......"

"Won't you let me hurry up?" Cui Lizhu said angrily, "I've just been to that scene! Guess what? The police at the Golden Police Station are all mallets! They didn't even see such obvious clues!"

"Huh?" Zhao Yu frowned again, "What mallet?

"The security door!" Cui Lizhu said proudly, "I haven't entered yet, and I found this problem at first sight, but those police officers haven't found the scene for so long!

"Oh......" Zhao Yu nodded quickly, and after nodding, it was as if an electric current suddenly passed through his body, making him shudder, "Xiao Cui, what do you mean......"

"Yes, the destruction on the security door is either disguised by the murderer!" Cui Lizhu said confidently, "Either there was a stupid thief who pried it later!" However, based on the fact that the house was a rough house that had been vacant for N years, I don't think anyone would really want to pry the door in!"

"In other words......" Zhao Yu suddenly aroused goosebumps, "did the murderer use the key to open the door and enter?

"No...... ......Not necessarily," Miao Ying suddenly interjected and said, "I have seen some thieves who can open the security door with only a plastic card, even if the murderer fakes the scene of prying the door, he may not necessarily have the key to the house!"

"Oh oh......" After hearing Miao Ying's voice, Cui Lizhu made a joking "oh" and said, "Miss Miao...... I've carefully checked that the security door on the scene is of average quality, but it is precisely the most difficult U-shaped lock to crack, and it can't be opened by plastic alone.

"Also, the lock cylinder is also a super B-level lock cylinder, double-sided double-row bullet slots, and there is a tension spring hidden in the innermost, in our jargon, when you see this kind of lock, you can go home without hesitation! In today's world, I'm afraid that only people of my father's level have a way to open it! It's a pity that he didn't teach me this trick, and the ...... is lost."

"Xiao Cui ......" Zhao Yu said excitedly, "So, can you be sure that the anti-theft door was opened by the murderer with a key?"

"Not 100 percent, but at least 80 percent more!" Cui Lizhu said again, "I went in and took a look at the environment, it was the third floor, and the windows of the rough room were quite airtight, and if it was completely closed, the murderer would not be able to enter." However, it is not ruled out that the windows are not closed, but they are just ......"

"It's just ......," Zhao Yu continued, "If the murderer entered through the window, then there is no need for him to add to the snake and destroy the security door! So, this guy must have the key to that house!"

"The information says," Miao Ying said quickly, "because the owner of the house is out of town all the year round, so he handed over the house to an intermediary company to deal with, and the key must be in the hands of those intermediaries!"

"Yes, I remember this!" Cui Lizhu said with a smile, "The people from the intermediary company shouldn't be difficult to check, right?"

"Since that......'s the case," Zhao Yu said to Miao Ying, "Then let's go back quickly!"

"Hmm...... Ahem...... So, you two aren't at the police station?" Cui Lizhu coughed maliciously.

"Okay, little girl!" Zhao Yu said with a smile, "If I can really find the murderer, I will definitely give you a great note! You should come back quickly! If the investigation goes well, maybe the case will be closed tonight!"

So, after hanging up the phone, Zhao Yu and Miao Ying immediately returned to the police station.

Coincidentally, as soon as they returned to the office, Wu Xiumin, Zeng Ke and others also returned from the interrogation room. Sure enough, as Zhao Yu expected, through a time-consuming and laborious interrogation, they didn't get any news at all. Han Kuan always insisted that he was innocent and had no knowledge of the two cases......

The three of them were dejected, but after hearing the news from Cui Lizhu, they immediately fell into a new excitement.

"Team leader......" Wu Xiumin said, "Although Xiao Cui has a point, it is not foolproof. The security door was pried, which should have been caused by the murderer's attempt to fake the suicide scene, and he wanted to mislead the police into thinking that the deceased had pried open the security door himself.

"And he himself may still have climbed the window to get in!"

"No!" At this moment, Miao Ying changed her previous skeptical attitude and said, "Have you forgotten, when we went to the scene today, we saw a poodle on the balcony on the second floor?

"So, don't say it's foolproof!" Zhao Yu said, "Even if there is only one percent chance, we can't let it go!"

"Team leader, I found out!" At this time, Zeng Ke had already called up the information from his computer, "Xinyuan intermediary, this is the largest intermediary company in the whole Golden City, and there are more than 100 employees!"

"Okay......" Zhao Yu snapped his fingers and said to Zeng Ke, "You check the employee information and see which one is in charge of the crime scene community? Who may have the key to the house!"

"Then ......," Wu Xiumin said, "I'll call all the investigators right now and ask them to immediately put down their work and investigate this company!"

"No, the company manager should know their employees best," Ran Tao immediately patted the holster and said, "I'll go to the manager's house now!"

After speaking, Ran Tao left the office in a hurry.

"And ......," Zhao Yu pointed to the whiteboard and said, "If the murderer is really an intermediary employee, then it is very likely that he had any contact with these deceased! So, we still have to investigate carefully to see if the deceased had dealt with the intermediary company before their deaths and wanted to buy a house or something?"

"Good...... I'll look it up......"

Miao Ying saw that everyone else was busy, so she sat down at her desk to investigate the information. Who knows, she just checked for a while, and immediately found a useful piece of information.

"Team leader!" Miao Ying said to Zhao Yu excitedly, "According to the information, the second deceased, Hao Lili, did buy a house with a mortgage! Although the house is off-plan, it is difficult to guarantee that she also had contact with the intermediary company before buying the house!"

"That's right!" Zhao Yu nodded, "And it's very likely to be this Xinyuan intermediary." ”

"Oh, I found it!" Who knows, before Zhao Yu's voice fell, Miao Ying found new information, and she said excitedly, "Oh, here...... It turned out that before Hao Lili bought a house, she had indeed seen a lot of second-hand houses, and she had signed a contract with one of the intermediary companies. This company should be Xinyuan intermediary, right?"

"Oh...... The contracts were signed, but she still chose the off-plan property in the end! It was tantamount to putting the intermediary on the knife!" Zhao Yu became more and more frightened, "Could it be ...... Is this the reason for the anger? No wonder Hao Lili died in a ruined building! That ...... The intermediary - who is it!?"