The next morning, Ho Ka-fai returned to Hong Kong Island by boat, and then went directly to Kowloon, went to the forensic identification center, and met the beautiful forensic doctor Wen Jiaxi.

Although the detection of the case has fallen into a bottleneck, He Jiahui is a little troubled. But seeing beautiful women early in the morning is still very comforting.

I knocked on Dr. Wen's door, and the sound of "please come in" came from inside.

"He sir, came here so early?" Doctor Wen greeted.

"I'm afraid of traffic jams, so I took the morning boat over." He Jiahui continued: "Zheng Jiazhen's preliminary autopsy report should come out, right? ”

"It's only been two days, and you're in a hurry." Dr. Wen said as he searched for the autopsy report on his computer.

He Jiahui said: "All the clues I found before have been overturned, and I can't find a new clue for the time being, so I can only see if there are any clues from the forensic doctor and the forensic side."

Doctor Wen nodded and continued: "Zheng Jiazhen's autopsy report has not been completed yet, so I can't give you a written report, but about the current autopsy results, I can tell you first, I hope it can help you solve the case."

According to the autopsy results, the deceased did die of suffocation due to compression of the neck. Only a furrow was found in the neck of the deceased, with some degree of epidermal detachment and subcutaneous hemorrhage.

The deceased's hands, feet, calves, and forearms were covered with dark purple-red corpse spots, and there were scattered bleeding spots, and the toes of the feet were still drooping after the occurrence of corpse stiffness, which can prove that the deceased was hanged.

We found no obvious bruises or wounds on the deceased's body, no signs of a fight, and we examined her nakedness, and she was not violated. ”

"What about the time of death? Is it still 2 a.m. to 4 a.m.? He Jiahui asked.

"The time of death is consistent with the judgment when the liver temperature was measured at the scene, which was between 2 a.m. and 4 a.m." Dr. Wen replied.

"Was there any foreign object found between the fingernails of the deceased? Like something like dandruff tissue? He Jiahui asked again.

Doctor Wen shook his head: "No, only her own skin tissue and her own blood stains were found in her fingernails, which should have been left by her trying to break free when her hands were tied." ”

Hearing this result, He Jiahui sighed lightly, it seems that the forensic doctor cannot provide useful information for the investigation of the case.

Dr. Wen continued: "Another point is that we found GHB residues in the deceased's body. ”

“GHB？ Y-alkyl butyric acid? He Jiahui asked immediately.

Doctor Wen nodded in surprise, she didn't expect He Jiahui to be able to name the scientific name of this substance.

As a former anti-narcotics policeman, Ho Jiahui is no stranger to this thing.

Y-alkyl butyric acid is a controlled Class I psychotropic drug, which can cause a strong inhibitory effect on the central nervous system, and is often used by criminals to make narcotic drugs and drugs.

He Jiahui breathed a sigh of relief: "I finally found some useful information!" It seems that Zheng Jiazhen was awake before she was hanged. ”

"Why do you have this judgment?" Doctor Wen asked puzzled.

He Jiahui explained: "The deceased had drugs in his body, which means that the murderer stunned the deceased and then tied him up, so the deceased did not resist and did not fight with the murderer." The murderer's skin tissue was not found between the fingernails.

The hands and feet of the deceased clearly showed signs of struggle, which means that the deceased was awake again after being tied. Therefore, I judged that the deceased should have been awake when he was hanged. If she had been hanged while unconscious, then there would have been no struggle. ”

"I didn't expect He Sir to be so young and have such good insight and reasoning skills!"

Wen forensic doctor nodded suddenly, and at the same time looked at He Jiahui's gaze, there was also a trace of admiration.

……

He Jiahui went to the Forensic Department again and found Forensic Gao An.

After seeing Gao An, He Jiahui handed over the newly found bundle of rope to Gao An.

"Gao sir, this is what we found from a suspect, please analyze whether this bundle of rope is the same as the rope that hanged the deceased."

Gao An looked at the rope and said: "On the surface, the color, thickness and material are all the same, whether it is the same or not, it has to be tested, it will take about two hours." ”

"No problem, I can wait." He Jiahui paused, and then asked: "Gao sir, are there any new discoveries of the evidence taken from the scene before?" ”

"I examined the rope that bound the deceased, and the rope on which the deceased hanged, and after comparing the incisions, it was determined that it was the same rope, which was cut into three sections, one to hang the deceased, and the other two to tie the hands and feet of the deceased.

On the rope, I found only the blood and skin tissue of the deceased, and no one else's. No blood reaction was found on the deceased's clothes.

The tape that sealed the mouth of the deceased was not found, no fingerprints were found, and no DNA other than the deceased was found. It seems that the deceased must have been wearing gloves when committing the crime. If you want to report it specifically, I will have to give it to you tomorrow. Gao An replied.

The information provided by Gao An is still sparse and ordinary, and there are no new clues.

He Jiahui pondered for a few seconds, and then asked: "Gao sir, let me take the liberty of asking, the deceased was hanged in the bathroom, the floor drain pipe in the bathroom, have you taken samples?" ”

"You judge the murderer's personal information by the hair NDA in the floor drain pipe, right?"

Gao An smiled and said: "He sir, don't look at me young, but I am also a professional forensics, and in such an important place as the floor drain, of course I have to collect samples."

I did collect hair from the dead in the drain, and it was more than one person.

However, considering that the location of the crime is a homestay, there are often different guests living in it, and it is normal for different people's hair to appear in the bathroom floor drain.

If you can find every guest in that room and take a biological sample of them, I can do a DNA comparison, but I won't necessarily be able to identify the murderer. ”

"That's true." He Jiahui nodded helplessly, and then continued: "The only clue is the bundle of rope I brought." ”

Two hours later, Gao An completed the inspection of the rope.

"I have tested the rope you brought, this is a polyethylene rope, the material and fiber thickness are exactly the same as the rope used by the murderer, and the material is also corroded, so it can be determined that it comes from the same rope.

But I compared the incision on the rope, and it doesn't match the rope that tied and hanged Zheng Jiazhen, that is, although this is the same rope, the murderer used it, not directly cut from the rope you brought. I don't know if this information will help you. Gao An opened his mouth to introduce.

"Thank you, this is very useful, now that we have at least one clue, we also have a new direction of investigation, and we can lock down the suspect from the source of the rope." He Jiahui said.

Gao An continued: "Although I can't give you a complete forensic report yet, I will send some of the reports I have completed to your mobile phone in the afternoon, hoping to help you catch the murderer as soon as possible." ”

……

After returning to the Cheung Chau Island Police Station, Ho Ka-fai immediately interrogated the cameraman Cai Mulin.

"Sir, I've said everything I need to say, what else do you want to ask?" Cai Mulin knew that he was going to be sued, and he was a little impatient.

He Jiahui said: "Cai Mulin, if you don't want to be charged with another murder charge, it's best to honestly cooperate with our investigation." ”

"Okay, I'll be honest, what do you have to ask?" Cai Mulin said reluctantly.

"Where did that rope in your suitcase come from?" He Jiahui asked.

Cai Mulin opened his mouth and explained: "That rope is used to hang Weiya, and when shooting, there will inevitably be some special angles, and a rope is needed at this time."

Sometimes it's to hang the actors, and sometimes it's to find a better angle to shoot, and we cameramen are also hoisted up. In addition, if you need to temporarily tie and drag something, you will also use rope.

This kind of rope is not a pipe product, it is durable and corrosion-resistant, it is widely used, and it is easy to buy. In addition to professional hardware tool stores, you can also buy them at rock climbing equipment stores and yacht clubs. ”

"And where did you buy that rope from? When did you buy it? He Jiahui asked again.

"I bought my rope from a tool shop in Sham Shui Po, which sells tools for working at height. As for the time of purchase. ”

Cai Mulin frowned and thought for a while: "It should have been a long time, I can't remember the specifics, it must have been more than a year!" I don't go to places where the conditions are harsh, and the rope doesn't wear out too much, and this rope can last for years. ”

The rope that was bought more than a year ago is so old that it is unlikely that the seller will remember who else bought this kind of rope at that time.

But Ho Jiahui thought about it, and the murderer used the same rope, which means that the murderer had the opportunity to touch this rope.

So He Jiahui opened his mouth and asked, "Who else can touch this rope besides you?" ”

Cai Mulin recalled for a few seconds and replied: "Usually when shooting, I will take this rope to the scene and put it together with other tools. The director, actors, assistants, and crew should all be able to get in touch with it. ”

In this way, the suspect is still in this advertising crew. But the problem is that each of them, there is an alibi! ”

Ho Ka Fai's brows furrowed, and he began to review everyone's alibi, trying to find loopholes in them.

Director Xue Chaohui's alibi proved that he was stealing money, and he was able to truthfully describe the process of theft and take out the stolen money. And only he knew that Brother Qiang locked the money in a drawer that night, and this alibi proved reasonable.

But no one witnessed him stealing the money, and if he had an accomplice, he could have found an accomplice to steal the money and kill the dead himself. Therefore, Xue Chaohui's alibi actually has loopholes.

Photographer Cai Mulin's alibi was a tryst with a girl, and this alibi has exact witnesses, and in order to provide this alibi, Cai Mulin also violated another law and will be sentenced to imprisonment. So this alibi is fine.

From another point of view, if Cai Mulin is the murderer, there is no need for him to continue to keep the bundle of ropes, that rope is a murder weapon, and if it is thrown directly into the sea, it will not leave clues.

The alibi of the actor Zhang Shaoyu is to go to a private meeting with his first love, and this alibi also has a conclusive witness. However, considering that the person who testified had an intimate relationship with Zhang Shaoyu, the possibility that the witness committed perjury in order to help Zhang Shaoyu cannot be ruled out.

And assistant Chen Weiting's alibi is the most problematic. He went to Macau and did not have the time to commit the crime.

There is not only a written record of this entry and exit, but also a video, and the video clearly captures Chen Weiting's entry and exit. Unless Chen Weiting has a twin brother who looks similar, pretending to be him to go to Macau, and deceived the immigration department.

Thinking of this, He Jiahui opened his mouth and ordered: "Liangbao, you go and check the kinship of the assistant Chen Weiting to confirm whether he has twins." ”

After a moment, Liang Bao responded; "I've checked, Chen Weiting doesn't have twin brothers."

He Jiahui shook his head helplessly: "Xiaohe, let's go to the scene again and do a reenactment of the case to see if any details were missed at that time." ”

"I'll go too!" Licking dog Taishan volunteered again, he didn't want He Jiahui and Du Xiaohe to have a chance to be alone.

……

Ho Ka-fai has a wealth of experience in handling cases, and he knows that if the case falls into a bottleneck and cannot find a breakthrough, a better way is to return to the scene of the crime to see if there are any details that have been missed. It's best to do a repeat of the case, and maybe find new clues from it.

Returning to the B&B, He Jiahui said: "Let's do a repeat of the case, Xiaohe, let's say you are the victim, Taishan, you are the murderer, you know each other, let's start!" ”

Taishan was very happy to play with Du Xiaohe, walked out, closed the door, then knocked on the door again, and spoke; "Xiaohe, it's me."

Du Xiaohe immediately opened the door from the inside and let Taishan in.

"That's not right! Xiaohe, you did something wrong. He Jiahui stopped suddenly.

"What's the problem?" Du Xiaohe asked.

"You opened the door too quickly!" Ho Ka-fai continued; "At two o'clock in the morning, even if the average person is not asleep, he must have washed up and gone to sleep, and at this time you can't get dressed neatly, at most you wear a pajamas.

But when the deceased died, the clothes were neatly dressed, so you can't open the door for me right away, but you should get dressed first and then open the door for me. It must take two minutes, right? ”

Du Xiaohe opened his mouth and said, "I remember that the deceased had a bra, right?" Then I need to take off my pajamas, put on my bra, put on my coat and pants, two minutes is not enough, at least four or five minutes. ”

"It's also said that under normal circumstances, women take off their bras when they sleep, but the deceased is wearing a bra, which means that she needs more time to get dressed."

He Jiahui frowned, and then shook his head to himself: "It's still not right!" Four or five minutes is still not enough. Do you remember the face of the dead? She cried before she died, and her eye makeup was spent, and her eye makeup followed the tears, leaving a long mark on her face.

This also proves that the deceased was wearing makeup at the time, and it was not light makeup. If it's you, you definitely have to remove your makeup before going to bed, right? It is impossible to sleep with heavy makeup. So before the deceased opened the door, he not only got dressed, but also put on makeup! ”

Tarzan spoke; "In the middle of the night, I fell asleep, and I had to get up and put on makeup again, what are you doing, there's no need for this!"

"You deserve not to catch up with Du Xiaohe, you straight man of steel!" He Jiahui said secretly in his heart, and then he explained:

"Most young women don't want to show off their makeup. These days, unless it's a family member, it's hard to see young women without makeup. ”

Du Xiaohe said; "Although this is the case, it is enough to wear light makeup, and it is too time-consuming to wear heavy makeup. You must know that it is very time-consuming for girls to put on makeup.

It takes 20 minutes to put on that kind of heavy makeup if it's fast, and more than an hour if it's slow. If she waited until the murderer knocked on the door, and then put on makeup, wouldn't the murderer have to wait at the door for a long time? ”

"It's past two o'clock in the morning, and I wear heavy makeup, which is also where I find doubts." He Jiahui said, stretched out two fingers, and continued:

"I thought of two possibilities, one is that after the murderer came, he really waited for the deceased to finish wearing heavy makeup. The second is that the deceased has not removed his makeup at all. ”

"You must have to remove your makeup before going to bed, why didn't the deceased remove your makeup?" Du Xiaohe asked.

"Maybe she was waiting for someone, so she didn't remove her makeup. If this is the case, it means that the deceased and the murderer have agreed in advance. He Jiahui said.

"Meet at about two in the morning?" Tarzan grinned and continued; "You don't have to guess what you're going to do! Could it be that this is a love killing? ”

He Jiahui shook his head: "If it's what you think, the deceased doesn't need to be so neatly dressed, just wear pajamas, and save it and take it off." Moreover, the results of the forensic examination showed that the deceased had not been violated before his death. ”

This is the first step in the repetition of the case, and there are more and more suspicions!

If you can't figure it out, let's do it for the time being, and continue to repeat the case.

"Y-hydrobutyric acid was detected in the deceased's body, indicating that the deceased was stunned. Taishan, you used to stun Xiaohe. He Jiahui said.

Taishan nodded and walked to Du Xiaohe, who fell down directly and pretended to be dizzy.

He Jiahui continued: "Then you bring a rope and tape, tie Du Xiaohe's hands and feet, put tape on his mouth, and then you come to the bathroom and hang the rope on the ceiling. Then you have to hang Xiaohe's neck on a rope...... No, it doesn't make sense. ”

Speaking of which, He Jiahui obviously found a new suspicion.

"Where is it unreasonable?" Taishan and Du Xiaohe asked in unison.

He Jiahui opened his mouth to explain: "Since the murderer can stun the deceased and tie it up, why does he hang the deceased, this has to hang the rope on the ceiling of the bathroom, and he has to hang the deceased on it, how troublesome!" He obviously has a rope, and he can directly strangle the dead to death!

Under normal circumstances, instead of strangling people to death, they are hanged to create the illusion of suicide, but in this case, the deceased's hands and feet were tied, clearly telling others that it was homicide. There is no need to disguise it as a suicide scene, so why would the murderer go to the trouble of hanging people? What is his motivation? ”

"Maybe the murderer didn't dare to kill directly?" Du Xiaohe asked.

At this moment, He Jiahui's mobile phone suddenly rang with the sound of text messages, he picked up his mobile phone and saw that it was a message from the forensic Gao An, and he had already sent part of the forensic report to He Jiahui.

"There's a report from the forensic authorities, let's stop for a moment, and I'll take a look at the forensic report." He Jiahui said, clicking on the forensic report.

"Huh?" In the forensic report, a piece of information caught Ho's attention.

In the next second, He Jiahui spoke: "I may have guessed the murderer's modus operandi!" ”

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(End of chapter)