Lin Yuhan took a flashlight to photograph Wang Dada's corpse: "In front of Wang Dada's mouth and nose, you can see a lot of white or light red foam. This foam is important evidence to identify drowning, and even after air drying, traces of foam can still be left around the mouth and nose. ”

Lin Yuhan walked around the corpse again and continued: "The time of death is about two hours. The skin on the sides of the deceased's feet and hands shrunk, swelled, and turned white. These phenomena occur only after the skin of the corpse is soaked in water for about two hours. Although this phenomenon is not a unique sign of drowning, it can be used as supporting evidence to infer the time of death of the cadavers. ”

Lin Yuhan broke Wang Dada's palm open: "The nails on the tips of the fingers contain a lot of mud and sand, indicating that the deceased struggled before he died. There are contusions on the forehead and arms, which are left after struggling in the water. There were no obvious external injuries elsewhere in the body, so it seems that the deceased did drown on his own, and there was no condition for external pressure. ”

"Doesn't that prove that he drowned himself?" Zhou Ruo was a little helpless, "How can such a big person drown himself?" Detective Lin, according to you, can we close the case with accidental death? ”

"That's not necessarily ......," Lin Yuhan's expression was serious, "There is a taste of alcohol in his mouth, and the deceased had drunk a lot of alcohol before he died. ”

"So he drank too much, poured into the water and drowned?"

"It's about an hour's walk from the nearest hotel. Do you think people can go so far when they are drunk? Lin Yuhan shook his head, spun around on the beach, picked up something from the beach casually, and continued, "What is he doing when he walks so far, if he is really drunk to the point where he is unconscious and unable to walk, causing him to fall into the water and die, he will not come here, then the place where he drowned should be the beach closer to the dining area." ”

"Detective Lin, what does this mean?"

Lin Yuhan drew a circle on the beach, and said with a serious expression: "It means that this is the place where the deceased drank before his death, and there are no wine bottles found at the scene, so someone deliberately cleaned up the bottles." So, it's not an accident, it's murder. ”

"Plot, murder ......" The expressions of the policemen present twitched extremely unnaturally.

"Yes." Lin Yuhan nodded.

Zhou Ruo asked, "Sounds reasonable. But Wang Da is a big living person, even if he drinks too much wine, he will struggle when he is pressed into the water. How much alcohol do you have to drink to get drunk like this, and you don't even have the ability to resist. ”

Lin Yuhan thought for a while and replied, "The specific means of murder, I need to know through a more detailed autopsy of the corpse, but unfortunately there are no autopsy tools on your island." But I guess that since the killer cleaned up the beer bottles, there is something wrong with them. For example, the murderer put a lot of sleeping pills in the wine, and after Wang Dada drank the wine, he completely lost the ability to resist, and the murderer pushed him into the sea. ”

Lin Yuhan walked to the reef by the sea, made a throwing motion, as if he was the murderer, and continued: "In this way, the deceased can easily lose the ability to resist, and there will be no evidence of the murderer's crime." When pushed into the seawater, the deceased's lungs instantly poured into a large amount of seawater, and he instinctively struggled. However, due to taking a large amount of sleeping pills, the deceased's consciousness is not clear, and he cannot find his way in the water, and it only takes a moment for the deceased to lose his ability to resist and die completely, thus creating the illusion of accidental drowning. You don't have a forensic doctor on this island, you can't do an autopsy, and to outsiders, it's an accidental death caused by falling overboard while drunk. ”

"The analysis makes sense, but what about the evidence?" Zhou Ruo asked.

"Evidence ......" Lin Yuhan took out a round object from his pocket and handed it to Zhou Ruo, "This is what I found on the beach just now." ”

"This ......"

"The bottle cap is rust-free, the color is very new, and it has not been eroded by the sea, so it was just thrown into the beach, and it is very likely that the victim came into contact with it before his death."

Zhou Ruo nodded, turned around and shouted to a police officer: "Officer Sun, put this away, it may be important physical evidence." ”

"Yes, Sir Zhou!"

Zhou Ruo turned his head to look at Lin Yuhan again and asked, "Detective Lin, what should we do next?" ”

Lin Yuhan walked up to Zhou Ruo and said, "Check the monitoring and see who Wang Dada is with in the end, and you can lock the murderer." ”

"It's simple, I'll arrange for the police to strictly check the surrounding surveillance, and notify you as soon as I find it. What other instructions does Detective Lin have that we need to cooperate? At this time, Zhou Ruo, although he can't be described as respectful, is already very polite in speaking. Lin Yuhan's inference just now had already made him extremely impressed by this detective's ability.

Lin Yuhan lowered his head and pondered for a long time, and said, "I need a copy of Wang Dada's information. It is very likely that the murderer came prepared, and even if the surveillance is checked, the murderer may not be able to be found immediately. The design of such a homicide case shows that the murderer and Wang Dada's understanding is by no means overnight. So, I need more detailed information to see what kind of people Wang Dada is dealing with, whether he has any enemies or business competitors, and whether these people have ever been to the island. In this way, the scope of the investigation can be narrowed. ”

"This ......"

"What, is there any difficulty or inconvenience on Sheriff Zhou's side?" Lin Yuhan asked.

"It's not inconvenient." Zhou Ruo was embarrassed, "You also know that we are just a small island here, and the police station's reserve database is very limited. Although the entire police system is now networked, I do not have this authority to obtain more information, and I need to apply to my superiors. It's night again, and the job will have to wait until tomorrow. This involves the issue of personal privacy, and the leader may not approve it, and even if it is approved, it may not necessarily get so complete information. The correction requires the assistance of the Lanyaguo police, so it may take a lot of time to bring the whole set of information, and I don't know if it will be in ......time."

"It's simple, if it's really difficult, I'll help you solve it." Lin Yuhan took out his mobile phone.

"Really!" Zhou Ruo's eyes showed excited expectations.

"Really." Lin Yuhan nodded, "But this is through my personal relationship, so this one ......"

"I understand, I understand." Zhou Ruo nodded hurriedly, "I'll add money to you!" ”