Attending ex-girlfriend's wedding, arresting the groom's officer on the spot

"Furthermore, on the left ankle of the body, there is a small patch of skin tissue that is relatively lightly decomposed and has not been extensively damaged by insects. Upon close inspection, a tiny pinhole mark can be seen on the skin. This pinhole mark is very subtle and easily overlooked if not carefully examined. It may be a trace left by drugs or poisons injected before death, or it may be a trace left by the murderer injecting drugs after death to accelerate the decomposition of the body and cover up the cause of death."

"These traces are all very crucial. We must record them, photograph them, and preserve them. We must also extract relevant tissue samples and hand them over to the technical department for further examination. For the indentation on the right wrist, we should extract the surrounding decayed tissue to examine for any metal or jewelry residue. For the needle mark on the left ankle, we should extract the tissue around the needle mark and the body fluids to examine for any drug or poison residue and to determine the source and purpose of the needle mark."

"Understood, Master." Lin Xiao nodded quickly. Following Zhang Kai's instructions, he photographed and documented the dent on the right wrist and the needle mark on the left ankle of the corpse. Using special tools, he carefully extracted relevant tissue samples and bodily fluids from the body, placed them in evidence bags, marked them, and handed them over to the waiting technical staff to be sent to the laboratory for further examination.

"The external examination of the body is complete. No further valuable clues were found. We will begin the autopsy." Zhang Kai said calmly, picking up a scalpel and preparing for the dissection. "The autopsy will focus on examining the decomposition and damage of the internal organs, extracting major organs such as the heart, liver, kidneys, spleen, and lungs for pathological examination; examining the stomach contents to determine the time and type of food consumed during the deceased's last meal; extracting bodily fluids such as blood, cerebrospinal fluid, and bile, as well as tissue samples from the liver and kidneys for toxicology testing to determine if death was due to poisoning; and extracting teeth and bone tissue for DNA testing, entering the data into the national DNA database, comparing it with missing persons information, and confirming the deceased's identity."

"Understood, Master."

With Lin Xiao's cooperation, Zhang Kai began the autopsy. The scalpel precisely cut open the chest and abdomen of the corpse, exposing the rotting soft tissue and internal organs. An even stronger smell of decay permeated the entire autopsy room through the protective gear. Lin Xiao couldn't help but frown, her stomach churning, but she still endured the discomfort and carefully cooperated with Zhang Kai's work, taking notes.

"Master, the chest and abdominal autopsy is complete. There is a large amount of putrid fluid in the thoracic and abdominal cavities. It is black in color and has a pungent smell. The major organs are all rotting to varying degrees. The heart, liver, kidneys, spleen, and lungs have all softened and dissolved. It is impossible to determine whether there are any organic lesions, and the cause of death cannot be determined based on the organ lesions." Lin Xiao reported softly while recording. "The lungs are severely rotten, and the alveoli have ruptured. It is impossible to determine whether there are any changes due to asphyxiation, and it is impossible to determine whether the cause of death was asphyxiation."

"Samples are extracted from major organs such as the heart, liver, kidneys, spleen, and lungs, and sent to the pathology laboratory for pathological examination to determine whether the organs have been damaged, have lesions, or have pathological changes caused by poisoning. Putrefactive fluid is extracted from the pleural and abdominal cavities for toxicology testing to check for the presence of common toxins." Zhang Kai explained as he carefully extracted organ samples and putrefactive fluid using specialized tools. "Note that when extracting organ samples, care must be taken to avoid damaging the organ tissue and to ensure the integrity of the samples, providing accurate information for subsequent pathological and toxicology tests."

"Understood, Master."

"Continue the autopsy and examine the stomach contents."

Following Zhang Kai's instructions, Lin Xiao carefully opened the deceased's stomach. The stomach was highly decomposed, the stomach wall thinned and softened, and the contents were a paste-like substance, black in color, mixed with a large amount of putrefied matter, making it impossible to clearly identify the type of food. "Master, the stomach dissection is complete. The stomach contents are highly decomposed and a paste-like substance, making it impossible to determine the specific type of food. Initial observation revealed no foreign objects, poisonous particles, or undigested food residue in the stomach contents. The time of the deceased's last meal is estimated to be between 2 and 4 hours before death. The specific time and type of food will require further testing of stomach contents samples to determine this."

"We extracted all the stomach contents and sent them to the toxicology lab for toxicological screening and food composition analysis, focusing on common poisons such as organophosphates, cyanide, and sleeping pills to determine whether the death was due to poisoning," Zhang Kai said. "In addition, we examined the intestines to see if there were any undigested food residues, foreign objects, or toxins remaining in the intestines, which will help determine the time and cause of death."

"Yes, Master. The intestinal dissection is complete. No undigested food residue, foreign objects, or toxins were found in the intestines. The intestinal mucosa was highly rotten and sloughed off, making it impossible to determine whether there were any lesions. Combined with the digestion of the stomach contents, it is further confirmed that the deceased's last meal was between 2 and 4 hours before death."

Zhang Kai nodded and continued, "Next, we will dissect the neck, examine the trachea and esophagus to determine if there are any foreign objects blocking the airway or any damage, and to confirm whether the death was due to suffocation; we will dissect the head, examine the brain tissue, and determine if there is any traumatic brain injury or brain tissue lesions caused by poisoning."

During the neck autopsy, Zhang Kai carefully examined the trachea and esophagus, finding them highly decomposed and softened. No foreign object was found obstructing the trachea, and no undigested food residue or foreign objects were found in the esophagus. No damage was found to the tracheal and esophageal mucosa, ruling out asphyxiation due to foreign object obstruction. "The trachea and esophagus in the neck showed no foreign objects or damage, ruling out asphyxiation due to foreign object obstruction. The neck muscles and blood vessels were highly decomposed, making it impossible to determine if there was strangulation or constriction. Therefore, the possibility of mechanical asphyxiation cannot be ruled out; further assessment based on subsequent toxicology results is needed."

During the head autopsy, Zhang Kai carefully opened the deceased's skull. The brain tissue was highly decomposed and liquefied, resembling a paste, making it impossible to determine if there was any traumatic brain injury. A complete brain tissue sample could not be extracted; only a small amount of liquefied brain tissue was collected and sent to the technical department for toxicology and pathological examination. "The skull showed no fractures. The brain tissue was highly decomposed and liquefied, making it impossible to determine if there was any traumatic brain injury, ruling out the possibility of death from traumatic brain injury. Liquefied brain tissue will be extracted for toxicology testing to rule out poisoning as the cause of death." (End of Chapter)