10:00 a.m. sharp, "Writer's House" apartment, room 2001.

"It's a chewing electronic component destruction device, which is usually made into some kind of well-known chewing gum style, and this one is still mint-flavored." Lao Zhong carefully used tweezers to pick out a black gelatinous solid from the corner where the plug-in board was located behind the refrigerator that had just been inexplicably burned.

Lao Zhong quickly shook it in front of Li Xiaonan's eyes, and immediately put it in the physical evidence bag, as an elderly senior in the physical evidence department, he was obviously not very satisfied with the result that he was about to go back and forth to the police station and the crime scene three times in just two hours.

Lao Zhong put his hands on his knees, pretended to stand up with some difficulty, and made a "hi" sound from his mouth.

He looked down at Li Xiaonan, who was still crouching in place and deep in thought, sighed softly, and did not disturb the police station inspector who had turned into a statue of the thinker, but turned around and prepared to return to the police station, trying to find some clues to the identity of Saraville from this small device that was not completely burned out.

"Is this fridge expensive?"

When Lao Zhong was about to step out of the door of Room 2001, Li Xiaonan behind him raised questions.

"Huh?" Lao Zhong was a little stunned, and replied inexplicably: "Yes... yes..."

Li Xiao stood up unneatly, and there was a "click" sound from his knees, and he held the refrigerator with one hand, saying, "In other words, its function is very powerful." ”

As a well-known enthusiast of refrigerators, Lao Zhong is of course omniscient in this "professional field", but in such a situation, in the face of Li Xiaonan's question, he can only put away his words like sales, and just nod cooperatively. Then, under the eyes of the old bell full of question marks, Li Xiaonan opened the upper double door of the refrigerator, took out a can of Coke from it with an expressionless face, opened the can with one hand and took a sip, and made an "ah" sound in his mouth.

"The power strips are all burned, and it doesn't affect the refrigeration?" Li Xiaonan held the Coke, and his expression was a little playful.

Lao Zhong reacted at this time, and walked quickly to the label of the refrigerator to carefully check the brand and configuration of this "luxury refrigerator".

Contrary to expectations, the label was also artificially destroyed with a weak acidic liquid, and it can only be barely seen that this refrigerator has a low-frequency to high-frequency transformer inside, and it has its own power storage function, just like a household high-power battery that has been made into a refrigerator.

"That's really the case..."Li Xiaonan scratched his short black hair with some annoyance: "So we can't know if this high-power battery has been used in the near future, right?" ”

"I mean, from the evidentiary level."

The old bell pondered for a few seconds, and finally nodded helplessly.

Since the plug-in board was destroyed less than 24 hours after the incident, it can be indirectly proved that someone, or the murderer, used the high-power voltage stored in it to complete his modus operandi.

But these are the results of reasoning, and there is no definite conclusion at the level of evidence.

"What are the ingredients of those tiny particles?" Li Xiaonan asked again.

Old Zhong nodded: "It's iron smashing." ”

“...”

Li Xiaonan frowned and took the elevator with Lao Zhong back to the first floor, he looked at some of the residents gathered at the gate of the apartment and the two police officers who were originally stationed, as if he remembered something...

Li Xiao walked out of the apartment building without changing his face, his eyes glanced around, and he didn't find the inexplicably annoying squinting man, sighed again, explained a few words to Lao Zhong, and then glanced at the police officer who looked at him, as if he didn't know what was going on, and joined the team to pacify the residents.

“...”

12:00 p.m. sharp, Polish City Police, Inspector's Office.

After Li Xiao tried his best to avoid the trouble of appeasing and letting the detained residents go, he didn't bother with Saraville's whereabouts anymore.

After all, as far as he could see, there were no less than three ways to avoid the police officers and leave the apartment.

Procedurally, he should now go and take the testimony of the three suspects again, and if there is still nothing out of the ordinary, he should release them as appropriate, even though he genuinely believes that the murderer must be among the three of them.

However, due to the fact that there is no method to crack the secret room, no matter how suspicious it is, the chain of evidence cannot be complete.

So he still wants to make good use of the 24-hour detention time, and try not to give birth to disturbing things that let the murderer go and struggle to catch it again.

"Xiao Xia's detailed autopsy report hasn't been sent yet." Li Xiaonan looked at the materials that Lao Zhong had just sent, and said to Zhao Yinglu, who was sitting opposite him, snorting and drinking hot tea.

"Come on, I just saw the forensic assistant Xiao Yang hurriedly printing something." Zhao Yinglu replied inarticulate with tea in her mouth.

"After the incident, the police arrived at the scene and searched and investigated the suspicious places nearby, including the garbage cans under the apartment building, which only contained a few takeaway lunch boxes and drink bottles."

"But after the fire in the morning, the trash can was inspected again and a charred wire with plugs at both ends was found inside the bind. It is not possible to determine whether there are traces of use or whether there are fingerprints remaining. ”

Li Xiaonan put down the materials and made a "tsk" sound in his mouth, which caused Xiao Yang, the assistant who came to deliver the report, to tremble for a while, thinking that Li Xiaonan knew that he often secretly drank free coffee at the police station.

After receiving the autopsy report, Li Xiaonan's face became even more gloomy, because the first thing that caught his eyes was a few big words: "The deceased contains tranquilizer drugs in his body, and in the neck of the smashed corpse, a needle similar to that left after being injected can be vaguely found." ”

"There is no family or anyone to identify the body?" Li Xiao looked at Zhao Yinglu.

Zhao Yinglu put down the teacup and replied: "Not yet, no items were found at the scene that could prove the identity of the deceased, and even the appearance of the deceased could only be determined by facial restoration." ”

"According to the results of the second interrogation, none of the three suspects met her except that they knew that the person with the pen name 'Shouyang' was a woman. Even more outrageous, the three of them also met offline for the first time. ”

"Did you find anything on the surveillance?" Li Xiaonan asked again.

Zhao Yinglu nodded and said: "Xiao Xue appeared in the surveillance two days ago, and the explanation she gave was: 'As the organizer of the event, you need to find the management of the apartment in advance to discuss the matter of renting a room. I also checked with the administrator to verify that what she said was indeed true, and provided paper materials with Xiao Xue's signature on them. ”

"Another suspicious thing is that the writer, whose pen name is 'Cola', also came to the apartment a day before the crime, but came out less than 10 minutes after entering the apartment building. The explanation he gave was: 'I misremembered the date of the event'. ”

At 16:00 p.m., outside the interrogation room.

Li Xiaonan looked at the three suspects who were brought in by Zhao Yinglu in turn, and lit a cigarette in the corridor of the police station for the first time.

Lao Zhong is right, running three rounds in two hours is indeed a bit tiring...

In the past four hours, counting the round-trip drive, Li Xiaonan finally determined the last piece of the puzzle of this secret room technique, but a serious problem also followed.

He cracked the method of the secret room and the logic of the murderer's behavior, but there was still no way to prove or find out who the murderer was through the evidence he already had, just like putting together the messy puzzle pieces, he could already see the whole picture, but the center was still missing.

Not to mention that some of the physical evidence was destroyed by the sudden appearance of Saraville, and the two pieces of evidence that were destroyed happened to be the two most important links in the secret room technique.

Although the news of the wanted Saraville has been released, Li Xiaonan is not so optimistic, he does not think that he can catch the guy who looks very cunning with a simple wanted warrant.

Of course, there is good news, that is, Lao Zhong has found the model of the chewing electronic component destruction device, and now Zhao Yinglu is leading people to track down the logistics situation, hoping that the good news is really worth looking forward to.

Therefore, Li Xiaonan can only negotiate with the three suspects in person and again, and maybe he can catch the flaws of the murderer.

"Uhh

In the next moment, he was a little gloomy because of irritability, like a pool of stagnant water, his eyes suddenly became sharp, as if the blade was about to be unsheathed, Li Xiaonan never felt that anyone could carry out such an antisocial act of murder with peace of mind without any flaws.

And just as Li Xiaonan was about to step into the interrogation room, a police officer hurriedly stopped him and whispered to him: "Xiao Xue's lawyer is here." ”