The world of American TV series: Starting with the L.A. Patrol.

"What is this?" Aubrey asked, his face still turning pale when he saw Jack use tweezers to pick out a thin black thread from the corner of the dead man's eye and put it under a desktop magnifying glass for careful observation.

The third victim died no more than 4 hours ago. Although the wound on his face was equally horrific, the psychological impact it caused was much less than that of the previous one.

Klay's performance this time was completely different from before. Even a weak player like Aubrey did not show too much discomfort and was observing and learning very attentively.

"It's an absorbable suture, model 7/0." The female forensic doctor sent by the South Korean side came up to the magnifying glass to take a look and said with certainty.

"Is this the kind of cosmetic thread commonly used in cosmetic surgery?" Jack took the glass dish handed to him by Clay and put the suture thread into it.

The female medical examiner nodded. Although her expression could not be seen due to the mask, her confusion could be seen from her eyes. "Yes, she looked like she had undergone an extreme plastic surgery.

The two bodies I found were severely decomposed, which may have led to some misjudgment on my part."

"What do you mean?" Although the female medical examiner's accent was a bit strange, everyone was finally able to communicate directly, so Clay quickly asked.

"For example, her jaw." Jack was reminded by the female medical examiner and suddenly realized, "The wound on the jawbone of this corpse was not caused by brute force using tools such as pliers. The incision on the bone is more like imitating a T-shaped osteotomy."

"Please speak human language." Aubrey said he had never heard of some professional terms.

"T-type osteotomy is a surgical method for chin plastic surgery. By cutting a section of bone in the middle of the chin and then inserting titanium nails to push the jawbone in the middle, the chin can be made more pointed, forming the so-called V-shaped face."

Jack gestured with his fingers and said that this operation was much more complicated than a simple chin circumcision, but it could effectively shorten the length of the chin and make the entire face more youthful.

Then he pointed at the deceased's nose and asked, "Is this a sign of imitation rhinoplasty? Both sides of the nostrils were cut open, and the cartilage of the nasal septum has also been cut."

The female medical examiner standing opposite him hummed when she heard this. She was checking the corner of the deceased's eye. It was at this location that Jack had just discovered the suture line. "In addition, the corner of the eye was cut open and then sutured. This is a canthoplasty surgery. In addition, part of the eyelid was removed.

But I am not sure whether it was a simple blepharoplasty or double eyelid surgery. The deceased had double eyelids, just like her nose, and she did not need a rhinoplasty. "

"But we didn't find any surgical stitches on the faces of the first two victims? Could they have degraded as the bodies decayed?" Clay roughly understood what extreme plastic surgery was. The murderer used the victims as experimental subjects to practice plastic surgery.

Jack shook his head. "Even absorbable sutures are made of artificial protein. Absorbable means that the human body will absorb this protein, but it is not so easy to degrade on the corpse. This is a new method, which shows that the murderer's method is improving."

-

After bidding farewell to the professional female forensic doctor and leaving the morgue, the three met Ma Xidao who was waiting at the door. He was eating a fried dough stick with relish, and he also had a bag in his hand, which looked like breakfast for everyone.

"Eat it while it's hot. It's hard to find breakfast shops in Korea. Coffee shops don't open until 9 or 10."

Although his behavior was somewhat reckless, he earned the unanimous gratitude of the three FBI agents, who were woken up in the middle of the night and were already starving.

The previous autopsy was only a preliminary examination and had not yet reached the stage of disembowelment. Even Aubrey didn't take long to recover and grabbed the fried dough sticks and ate them while walking.

Koreans, especially young people, basically have no habit of eating breakfast. Coupled with the bad eating habit of eating kimchi every day, their incidence of gastrointestinal diseases and gastric cancer has always remained the highest in the world.

The four of them had breakfast on the roadside. Perhaps because the hotpot last night had brought the two sides closer together, Ma Xidao did not wear formal clothes today. Instead, he put on a blue and white striped sports shirt. With his figure, he looked more like a fitness coach than a policeman.

He casually wiped his greasy hands with paper, took out an ordinary tourist map from his pocket and spread it out in front of everyone.

Itaewon is an area consisting of a main street and many alleys, approximately 1 kilometers long from Itaewon 2-dong to Hannam 1.4-dong.

"Dong" originally meant "village" in Korean, and later it gradually evolved into the meaning of "block", which is somewhat similar to the term "new village" or "street" in Chinese cities.

Ma Xidao drew a cross in an alley on the west side of Itaewon's main street. "This is the result of my investigation. The first victim, Barbara Walker, should have been dumped here."

Jack took the map and pointed at the cross in the northeast of Itaewon. "Is this the location where the second victim, Jessica, was dumped?"

"Yes, there are only two alleys between the two sides." Ma Xidao then drew a cross on the southeast corner, forming a triangle with the previous two crosses. "This is where the body of the third victim was dumped yesterday. It is two and three streets away from the previous two locations respectively."

Clay grinned, feeling a little unbelievable, "So the three body dumping sites are no more than four blocks in total?"

The murderer is very brave. Jack's expression is also very interesting. He thinks that if Red were here, he would be happy, because that would be a simple geographical profile he had done. If he used three dots to draw a circle, the total area would be less than 1 square kilometer.

"The murderer could be someone who works or lives in the area."

But as a local, Ma Xidao wanted to know more about the situation in Itaewon. Looking at the three crosses on the map, he put his hands on his hips in embarrassment.

"This investigation is not an easy task. This is the most central and prosperous area in Itaewon. Did you gain anything in there before?" He pointed towards the morgue.

Jack recounted their latest discovery, "Given that South Korea is the plastic surgery capital of the world, plastic surgery could even be considered part of your culture.

Considering the experience required to perform these surgeries, we suspect the murderer may be Korean and work in a profession related to cosmetic surgery.”

Ma Xidao scratched the back of his head in distress. "Almost one-third of all the pretty girls in Seoul hang out around here. There are many black clinics that provide plastic surgery around here. But I finally have a direction. Can I narrow down the target a little bit more? That's using your geographic profiling?"

"OK, I'll try." Jack smiled, took out his cell phone and called Hannah.

-

"Yes, Alice and I checked the victim's credit card spending records. Barbara Walker went to the Red Petals flower shop to buy flowers almost twice a week, and Jessica went to the Shining Nails salon once a week to get a manicure. The two locations were less than 20 meters apart."

Hannah yawned loudly after she finished speaking, but her voice was still filled with excitement. "The store where Elsa Byquist works is also on the same street. If she goes home directly after get off work, she will pass by the same place every day."

According to the address she gave, Jack drew a circle at a location between the three forks on the map.