After inspecting the 11 corpses, Han Cheng and the others, led by Sun He, arrived at the large villa where Cao Jing's family lived.
Now that villa has become a "haunted house" for many Internet celebrities to check in.
The reason why Sun He kept the villa without selling it was to facilitate the police who would follow up on the case to search for evidence in the villa.
The villa has been abandoned because no one has taken care of it. The yard has long been overgrown with weeds, the leaves are rotting, and the air is filled with an unpleasant smell.
As everyone walked into the villa, a gust of cold wind blew, giving people a creepy feeling.
Based on the records in the file, Han Cheng planned to check the locations of the bodies of the 11 deceased people one by one.
The first thing Han Cheng checked was the location where the two security guards fell.
According to the records in the file, one of the two security guards fell in the security guard box next to the gate, and the other fell in the security lounge behind the first floor of the villa.
According to the forensic autopsy report of that year, the first person to be killed was the security guard in the security guard box, followed by the security guard in the security lounge.
The places where the two fell were far apart, so it makes sense that when the first security guard was killed, the other security guard didn't notice.
After investigating the location where the two security guards fell, Han Cheng and the others then walked into the villa and continued to check the locations where the other victims finally fell.
The nanny and Cao Jing's family of seven all died in the rooms where they slept.
Only the driver died on the fourth floor stairs.
It was probably around one o'clock in the morning when the hammer maniac entered the villa to commit murder. At this time, except for the two security guards, everyone else should have fallen asleep.
Therefore, it makes sense that Cao Jing's family of seven and the nanny were killed in their sleep in the room.
But the room where the driver slept was obviously on the first floor. Why did he die on the fourth floor?
Logically speaking, the Hammer Maniac should start from the first floor and kill all the way upstairs, and the driver should die on the first floor.
Could it be that when the hammer maniac was attacking him, he noticed it in time and escaped from the room?
After escaping the pursuit of the hammer maniac, he ran all the way upstairs?
But this scenario seems unlikely.
Because if the driver escapes the pursuit of the hammer maniac and runs upstairs.
At this time, he should have shouted and knocked on the door to notify Cao Jing's parents who lived on the second floor, Cao Jing's couple who lived on the third floor, and Cao Jing's three sons who lived on the fourth floor.
If you hear the driver shouting and knocking on the door, someone will go out to check. It is impossible for everyone to die in their bedroom.
Therefore, Han Cheng found the detail that the driver collapsed in the stairwell on the fourth floor very suspicious.
This is the most puzzling part of the whole case.
If we find out why the driver collapsed in the stairwell on the fourth floor, perhaps there will be a breakthrough in this case.
After inspecting Cao Jing's villa, Han Cheng and the four returned to the hotel arranged for them by the Bo City Police Department.
In the hotel room, Han Cheng and the four discussed the case.
"Lan Ru, please tell me, please tell me the chronological order of the murders of these eleven people!"
Lan Ru nodded, "After the preliminary examination of the bodies in the ice room, my conclusion on the death time of the eleven victims is consistent with the conclusion given by the medical examiner back then!"
"The two security guards were killed first, then the nanny, Cao Jing's parents, then Cao Jing's wife, Cao Jing's three sons, and finally Cao Jing's driver!"
Han Cheng was silent for a moment and then said, "Do you think the time of death and the place where Cao Jing's driver died is suspicious? He obviously lived on the first floor, but he died in the stairwell of the fourth floor!"
"Perhaps he discovered that the Hammer Maniac was committing murder and ran upstairs to inform everyone?" Hong Xi scratched his head and said.
"If he ran upstairs to notify everyone, why didn't anyone come out of the room?"
"Maybe they were sleeping too deeply!"
"Hong Xi, what you said is very good!"
When Han Cheng said this, Hong Xi was stunned in confusion.
"I suspect that the reason why they slept so deeply was because they were drugged! The person who drugged them is most likely the mole!"
As soon as Han Cheng said this, the other three people showed surprised expressions.
"Lan Ru, did the forensic doctors at that time conduct tests on the blood and stomach residues of the 11 deceased people?"
"Yes! But because of the limited technology back then, they simply did a poison test, and the test results showed that the 11 deceased people had no signs of poisoning!"
"That means they didn't test whether there were sleeping pills in the deceased's stomach!"
"Yes!"
In fact, the forensic doctors at that time did not check whether there were sleeping pills in the stomach of the deceased, and we cannot say that they were careless.
After all, the technical conditions at that time were limited, and forensic manpower was also in short supply. One forensic doctor was often responsible for many cases.
The main responsibility of the medical examiner at that time was to determine the cause of death of the deceased.
Like the 11 deceased people in this case, they have determined that the fatal injuries of the deceased were blunt force injuries to the head.
Therefore, it is reasonable that no other tests unrelated to the cause of death were performed.
"Then if we test the stomachs of the deceased now, can we still detect whether they took sleeping pills or other drugs before they were alive?" Han Cheng then asked.
"I think it should be possible to detect it! Because the corpse is still very well preserved, and the detection equipment now is more advanced than before."
"Without further delay, I will immediately ask the forensic department of the Bo City Police Department to cooperate with you, and you will conduct another autopsy on the 11 deceased people!"
"Okay!" Lan Ru nodded.
...........
After Han Cheng called Bureau Li of the Bo City Police Department, Bureau Li immediately agreed to hand over the forensic department of the bureau to Lan Ru, and also dispatched forensic elites from other branches to assist Lan Ru in doing the autopsy.
After Lan Ru and forensic doctors from the Bo City Police Department conducted re-autopsies on 11 corpses.
Soon, the results of the autopsy came out.
In the hotel.
Lan Ru reported to Han Cheng, "After repeated testing, I detected the ingredients of sleeping pills in the stomachs of the 10 deceased!"
"Is there no sleeping pills in Cao Jing's driver's stomach?!" Han Cheng said, touching his chin.
Lan Ru nodded.
"Han Shen, you are really amazing! How did you guess it?!" Hong Xi looked surprised.
Han Cheng saw everyone's puzzled faces, so he explained, "Actually, before I came to Bo City, I felt that there were too many strange things about this murder case! I suspected at that time that there might be someone who was collaborating with the Hammer Madman, and that's why he was like this Killed so many people successfully!"
"After seeing the position where Cao Jing's driver finally collapsed, I became suspicious of this person. Now 10 of the 11 people have sleeping pills in their stomachs, and the remaining one has no sleeping pills in his stomach. The one with the most suspicious ingredients is naturally the most suspicious driver!"
"Han Shen, you mean Cao Jing's driver is the traitor?" Hong Xi's eyes widened.
Han Cheng nodded, "Currently, he is the most suspicious! All suspicions point to him!"
"But he was also killed by the Hammer Maniac!" Hong Xi was still a little puzzled.
"This may be in line with the ruthless style of the Hammer Maniac!"
