Jiang Xinyu really couldn't have appeared at the scene of the crime, according to Sun Xin's time of death, Jiang Xinyu was with Nangong Yi and them at that time, Jiang Xinyu was not suspicious, but he was involved with Hede Medical College again.

Before leaving, I specially asked Song Chi for Sun Xin's file, but everything related to Hede Medical College didn't seem to be simple, Nangong Yi originally wanted to dissuade me, after all, even if this case was appalling, it didn't belong to the scope of our intervention in the investigation after all.

In fact, after Wen Jike's death, the investigation into Hede Medical College should have come to an end, at least all the mysteries that had plagued us before were solved one after another because Wen Jike and An Rongyue surfaced.

"What about Helian Yi? How did Helian Yi appear, a person who was dissected by ** came back to life after ten years, and still maintained his appearance and memory before death. "We found a random roadside stall and ate and chatted." She had an accident at Hede Medical College, and the tattoos on the soles of her feet were the same as Nie Bingwan's, even if Wen Jike was a law, but these did not find the answer because of this. ”

"Zhang Fan described to us the four-eyed ghost king who guarded the entrance to the underworld." The prince also said calmly. "Unless he really saw it with his own eyes, Zhang Fan wouldn't know what the Four-Eyed Ghost King looked like, and I'm afraid those rumors may not all be groundless."

"You mean to believe that Hede Medical College really has a passage to the underworld?" Nangong Yi looked at us with an inquiring gaze.

"Regardless of whether Zhang Fan saw the four-eyed ghost king or something else, one thing is certain, Zhang Fan did see something on the night he went crazy, so that he set fire to the building materials to protect himself, and it is no coincidence that the place where he saw the ghost king happened to be the rumored passage to the underworld." Han Yu also thought that something was wrong, and said seriously. "I think it's really necessary to investigate, if the Hede Medical College really has a passage to the underworld, I'm afraid this place can no longer be used as a school."

"Even if according to your ideas, Hede Hospital is really weird, but nothing major has happened to this college since its establishment." Nangong Yi still has some insistence, we think too much.

"Just because it didn't happen doesn't mean that there is, just like Wen Jike said before he died, what you see with your eyes may not be true, since we have all intervened, it's better to find out." I took a deep breath and replied with a grim expression. "It just so happens that Sun Xin's case doesn't seem to be simple, so let's start with Sun Xin's case, so that there is a reason to investigate Hede Medical College."

Nangong Yi saw that everyone else agreed with my idea, and nodded in agreement to continue the investigation of the rumors at Hede Medical College, and the next day she retrieved more detailed information from Sun Xin.

From the information, we have a further understanding of Sun Xin, her relationship with Jiang Xinyu is extraordinary, in fact, including Mo Yongyuan is also Sun Xin's old friend, these three people studied abroad when they were young, under the tutelage of famous psychiatric experts, Sun Xin and Jiang Xinyu can be said to be women who do not let their eyebrows go, and they were called twin stars when they were young, which also indicates that the future of these two people is limitless.

After graduation, Jiang Xinyu and Mo Yongyuan chose to return to China, while Sun Xin stayed abroad to continue to study the knowledge of psychiatry with his mentor.

However, Sun Xin and Jiang Xinyu have a deep friendship, when Mo Yongyuan died, Sun Xin was going to make a special trip back, but Jiang Xinyu was afraid of touching the scene and persuaded Sun Xin not to return, but the two have been writing continuously over the years and have never broken contact.

This time is Sun Xin's first time returning to China, and he wanted to return to his roots, but he didn't expect to suffer a catastrophe when he came back.

"The contents of the room have not been tampered with, and valuables have not been lost, indicating that it was not a murder caused by robbery." Yun Duruo said thoughtfully after reading these materials. "And the time of Sun Xin's return to China was determined until she was dying, including the hotel she stayed in was also selected after she arrived, and her itinerary was not fixed, so it can be seen that her death was not premeditated to be killed."

"Sun Xin is a recognized authority in the field of psychiatry, and she has devoted her life to the study of psychiatric treatment, like Mo Yongyuan, and has a high international reputation, and she is an extremely respected person." Nangong Yi closed the information and thought for a moment before muttering to herself. "A well-known scholar like Sun Xin should not have a grudge against anyone, and she has never returned, and it is impossible for her to have an enemy in China, and vendetta can almost be ruled out."

I've been listening quietly to their analysis, at least one thing can rule out the possibility of vendetta, after Sun Xin checked into the hotel, there was an endless stream of people who came to visit because of her fame, Sun Xin specially instructed the hotel management, and submitted the schedule, not on the schedule of pre-booked she did not see.

There was no trace of prying on the door lock of Sun Xin's room, which showed that Sun Xin took the initiative to open the door, and at that time Sun Xin made an appointment with Jiang Xinyu, but Jiang Xinyu had been with us because of the sudden change in Hede Medicine, but Sun Xin still opened the door, which shows that Sun Xin knew the person who knocked on the door.

And it is not shallow to let this person enter the door, as for the motive I really can't think of it for the time being, but judging from the environmental evidence at the scene of the crime, Ling Guodong called us to tell us that the murderer had a strong sense of anti-reconnaissance and did not extract any valuable fingerprints in the room.

"The murderer is not like a random killing, from the point of view of the means of committing the murder, the murderer's methods and processes are very rigorous, and it can even be said that it is seamless, the murderer's killing methods are not so much cruel and ruthless, but rather that this person's psychological quality is completely beyond ordinary people, and the calmness is shocking." Nangong Yi said after listening to me analyze the identity of the murderer.

"People often say that there is a ghost in their heart, so they will have a weak heart, but this person killed Sun Xin and couldn't see the fear and panic at all." Han Yu was very puzzled and muttered to himself.

"That only shows one thing, this is not the first time this person has killed someone!" Yun Duruo crossed his hands and walked back and forth in the room for a few steps. "The murderer is a habitual offender, and the reason why he is so skillful in killing shows that he has killed many people in the same way before, so he will be methodical."

"Then it's strange, how could a world-famous scholar know a vicious perverted murderer?" The prince asked thoughtfully.

I frowned and lit a cigarette, to narrow down the scope of identification of the murderer, we must first start from the murderer's method of murder to analyze the characteristics of the murderer, first of all, from the current physical evidence to see that the murderer is a person who committed the crime alone.

Ling Guodong told us that a drop of anesthetic was extracted from the carpet at the door of the room, it can be seen that the murderer immediately attacked Sun Xin after entering the room, and the autopsy report also mentioned that an anesthetic hole was found in the spine of Sun Xin's body, Sun Xin is 58 years old but moves freely and is in good health, and can be easily injected with anesthetic from behind, which shows that the murderer Kong Wuli should be a man.

The murderer dragged him into the bathtub after injecting him with anesthetic, and Ling Guodong's scene investigation instrument showed that there were a large number of cleaned blood stains in the bathtub, presumably the bathtub was the first scene of the murder, and the murderer performed a craniotomy on Sun Xin in the bathtub.

Brain surgery is an extremely delicate operation, the slightest mistake will be critical to people's lives, from the size and flatness of Sun Xin's skull incision, the murderer has extremely superb medical knowledge, and is particularly good at brain surgery, plus the murderer can accurately inject anesthetic into Sun Xin's spine in a very short time, it can be seen that the mastery of medical skills is quite skillful.

It takes a long time and experience to possess the above characteristics and skills, and to be able to use them freely, so it can be inferred that the murderer is about 38-60 years old, and there is a close relationship between his profession and medical affairs, and it is not excluded that he is a doctor, especially a doctor who is engaged in brain surgery.

Murder should be very panicked and fearful for ordinary people, but the murderer is calm, as analyzed by Yun Duruo, the murderer may have a murder record or a murderer who is on the run.

After Sun Xin's craniotomy, there were too many ways to kill Sun Xin's murderer, but the murderer chose to take Sun Xin back to the living room, and cut off Sun Xin's forehead lobe for cooking, looking at the photos taken by Ling Guodong from the scene, after the murderer was cooking in the kitchen, he carefully cleaned all the cooking equipment used, and even wiped the water on it, which was neat and orderly, which shows that the murderer is a person who pays attention to details.

I noticed that all the knives and cooking equipment in the photo were placed in the same direction accurately, and on a horizontal line, which was obviously deliberately arranged by the murderer, indicating that the murderer may have had severe obsessive-compulsive behavior.

After the murderer cooked the dishes that used Sun Xin's brain as an ingredient, instead of being disgusted, he ate them all, and even did not forget to feed Sun Xin, who was not dead at the time, which shows that the murderer's mental condition may have some kind of problem.

Killing is but a means, and cannibalism is the real goal of the murderer.

"The murderer may be suffering from mental illness, cannibalism can satisfy the murderer's mental fantasies, and the technique is so skillful, which shows that the murderer is definitely not the first time to commit a crime." I said with certainty to Nangong Yi. "Comparing the characteristics of the murderer with the people in the criminal file, the murderer is likely to be a suspect at large."

"What was the murderer's motive for killing Sun Xin?" Han Yu asked blankly.

"One is a specialist in treating mental illness and the other is a patient with severe mental illness, and their relationship is not clear enough?" I replied with a deep puff of smoke.

"It's the relationship between the doctor and the patient, presumably Sun Xin has treated this person." The prince shook the rosary in his hand and said calmly.

"It's anger and murder! It should be that this person knew that Sun Xin was back, so he came to kill Sun Xin to avenge the treatment he had treated. Yun Du muttered thoughtfully.