Caroline blocked the door and looked at Wang Su proudly, winking at him with big watery eyes: "Whatever you call me, if you don't name this case, don't want to leave!" ”

"Hey... Bother! Wang Su had no choice but to sit down again and light a cigarette again.

Caroline forced a smile and sat down across from him, making a "please" gesture to him: "Come on, show off~"

Wang Su looked at Caroline depressedly for a moment, then suddenly picked up the wire and threw it over.

Caroline caught the wire and asked blankly, "What does this mean?" ”

"Take a closer look at the cuts at both ends of the wire and tell me what you found."

"Truncated?"

Caroline frowned and looked at the wires, and after a moment, slowly shook her head.

"It's just an ordinary clip, what can you see from this?"

Wang Su sighed helplessly, and then said: "As long as the criminal commits the crime, it will definitely leave traces, and these precious traces are the key to open the breakthrough of the case." You tell me that the criminal in this case was premeditated to kill someone, so this wire was prepared by him in advance, right? ”

Caroline stared at the cut of the wire with a puzzled look on her face, and nodded.

"Take a closer look at the rubber of the truncated opening and the exposed multi-strand copper core, what are the traces on it?"

Caroline brought the wire in front of her eyes and looked at it carefully, and said, "There are multiple pinch marks on the rubber and copper core at the cut-off opening. ”

Wang Su asked, "What does this mean?" Or what can be inferred from this? ”

Caroline bit her finger and thought about it, but shook her head.

Wang Su covered his face: "If James had been angry with you, I really admired him." Come on, come on, bring the wires......"

"Oh," Caroline obediently handed over the wire.

Wang Su held the wire in his left hand, and stretched out two fingers in his right hand to imitate clipping: "This kind of thick wire, if an adult man can easily cut it with one action, the fracture will be very neat." But there are multiple pinch marks at the cut of this wire......"

"Wow...... Caroline's mouth opened into an O-shape, "I see, this means that the criminal repeatedly clamped several times before cutting the wire, it can be inferred that the criminal is not strong, it is very likely that it is a woman!" ”

Wang Su then asked: "What does it mean that the murderer did not strangle the victim at one time, but only killed the victim with a blunt object?" ”

Caroline patted the table excitedly: "This also shows that the murderer's strength is not strong enough, and he failed to strangle the victim, at most he was only stunned, which can also be inferred that the murderer is a woman!" ”

"Okay, that's it! Good bye! Wang Su got up again and walked to the door.

"Stop!! You're fooling that!! Caroline rushed over to block Wang Su's body, "Just tell me a guess and lock up the murderer??" Are you kidding!! What about the exact evidence?? And what's going on with that left-hander?? ”

Caroline took out the key from her trouser pocket and locked the door to the conference room from the inside.

"Oh my God!!" Wang Su held his head in his hands and collapsed, "I'm going to the supermarket, or the discounted goods will be snatched up!" Is that okay, and I'll tell you when I'm done shopping?? ”

"You think beautiful!!" Caroline thrust the key back into her pants pocket.

"Oh my God... I should go out today to see our Chinese calendar. Wang Su had to sit back again, picked up the photo of the corpse angrily and shook it, "Come on, come on, look at the strangulation marks on the neck of the corpse, tell me which side of the neck has more subcutaneous bruises?" ”

Caroline leaned over to the photograph and looked at it for a moment before saying, "On the right side, the strangulation marks on the right side are obviously larger than the left side. ”

Judging from the fact that the wire was put around the victim's neck in the photo, the murderer lassoed the victim from behind, then crossed the wire, and pulled the wire with both hands to tighten it along the opposite side. Combined with the fact that the strangulation marks on the right side of the corpse's neck are significantly larger than those on the left, what can be inferred? ”

Caroline asked cautiously, "Does this mean that the murderer's left hand is obviously stronger than his right hand?" So speculate... The murderer was a left-hander? ”

Wang Su spread his hands and shrugged his shoulders: "Look, you have suddenly become smarter." ”

"You're less proud! Also, why do you speculate that the killer is the victim's classmate? ”

"First." Wang Su stretched out a finger and shook it at Caroline, "If you look at this wire more closely, you will find that this is the power cord used in a kind of student desk lamp that was very popular in the 80s." Although it looks exactly the same as the general power cord, if you look closely at the cut of the wire, you will find that the rubber sleeve of this wire is half a millimeter thicker than that of ordinary power cords, which is a safety design specially designed for students back then. ”

"Huh?" Caroline picked up the wire and looked back and forth, her face full of disbelief, "You... With the naked eye, you can determine that this rubber sleeve is half a millimeter thick?? ”

"Second." Wang Su stretched out two fingers, "If you are the victim and you are going to sketch in the forest of the island so far away from the school tomorrow, who will know in advance?" ”

Caroline thought for a moment and said, "Well... If it were me, I would only reveal my whereabouts when I was discussing with my classmates what to do on the weekend at school. ”

"Bang Bang Bang ......"

Wang Su clapped a few times, crossed Erlang's legs and smiled: "Awesome!" Congratulations on answering your question again! ”

Caroline rolled her eyes: "To be honest, your observation really surprised me, your speculation can also be said to be a breakthrough in this case, but you should know, speculation is speculation after all, to convict and arrest people, you must have accurate and powerful evidence." ”

Wang Su stretched out a hand expressionlessly: "Give me scissors." ”

Caroline looked at the wire in Wang Su's hand, and suddenly had a bad premonition: "What do you want to do, and you want to destroy the evidence?" ”

Wang Su still stretched out his hand: "Bloody officer, don't you want evidence, I'll show you the evidence that has made you negligent for 35 years." ”

"Can he really produce evidence??" Caroline thought about it for a while, but still took the risk of violating the rules and found a pair of scissors from the filing cabinet drawer in the conference room and handed it to Wang Su.

Wang Su said while cutting the rubber sleeve of the wire: "Bring a paper towel." ”

"Oh," Caroline pulled out a pack of tissues and handed it over, "turn right out of the toilet." Do you really have diarrhea? ”

"Pull your head! Spread out the tissues!! ”

"Oh......" Caroline stuck out her tongue and hurriedly pulled out a tissue and spread it out on the table in front of Wang Su.

As more and more rubber sleeves were cut from the wires, the expression on Caroline's face became more and more surprised, because she noticed that the copper cores that had been hidden under the rubber sleeves seemed to be mixed with some black substance.

Wang Su put down the scissors and gently twisted the copper core a few times, only to see that these black substances fell off the copper core and scattered on the spread out paper towels.

"What is this??"

"It's blood!" Wang Su put down the wire.

Caroline pointed to the tissue in surprise: "Blood??" Whose blood?? ”

Wang Su pointed to the photo of the corpse: "The victim has no open wounds, whether it is on the neck or the position of the back of the skull, whose blood do you say this is??" ”

Caroline glared at Wang Su with a shocked face: "What do you mean... Is it the murderer's blood?? ”

Wang Su nodded.

"But... But why is the murderer's blood in the wires?? ”

Wang replied: "When the murderer tightened this wire with all his strength, his hand was cut by the bare copper core. ”

"If the murderer was injured and bleeding, why didn't blood stains be found on the exterior of the wires in the first place??"

Wang Su picked up the case file and shook it: "The victim was only found 25 days after his death, and it cannot be ruled out that the blood stains on the surface of the wires were washed away by the rain, while the blood stains that seeped into the wires along the copper core were preserved." ”

Caroline snatched the file and flipped through it, muttering, "Yes... Yeah...... The dossier does record that there was a heavy rain that lasted for five days in those 25 days......"

Caroline stared and stunned for a while before coming back to her senses, and then carefully folded and wrapped the tissue: "No... I didn't expect such direct evidence to be hidden in the wires all along......"

Wang Su shook his head: "In 35 years, the probability that this bloodstain can detect complete DNA is less than 30%, but fortunately, now that the technology has advanced a lot, it is still easy to detect DNA fragments, which is enough as evidence." ”

Caroline nodded slightly, staring at the tissue in her hand and stunned again.

Suddenly, Caroline looked up sharply: "How did you know that there was blood in this wire??" ”

Wang Su smiled, picked his nose and skimmed his head, but did not reply.

At this time, Caroline recalled that Wang Su had just sniffed the wires with his nose.

"You... Don't say you smell it with your nose! You must know that the smell of 35 years of blood is already very light, not to mention that it is still wrapped in wires! You have to have the same sense of smell as a police dog!! ”

Wang Su continued to pick his nose: "Hey... Don't ask me why I found out, I'd rather ask, why didn't you examine this wire carefully?? I think if you had done your work in a more detailed way, maybe this case wouldn't have been hanging there for 35 years. ”

Caroline was speechless, he was completely stunned.

At this time, she was thinking in her heart that the direction of this Asian man's thinking, observation ability, and reasoning logic were simply incredible, far from being comparable to ordinary police detectives.

"Knock knock!!"

Suddenly there was a knock on the door, and Caroline came to her senses.

Opening the door, James rushed in excitedly.

"Wang Su!! You're really right...... Well?? James suddenly stopped, and looked at Caroline and Wang Su with a suspicious face, "You... What are you doing? Why do you need to lock the door? ”

Caroline's face instantly turned red to the root of her ears: "What are you talking nonsense! He was just about to run away, and I locked the door......"

"Oh yes!" Wang Su patted his head, "I have to go to the supermarket!" Bye! ”

Unexpectedly, James and Caroline blocked the door in unison, and James sneered: "That... We found three of the victims' left-handed classmates, who were in the same grade as the victims. One of these three people has died, and then I called the other two to inform them to cooperate with the police investigation, and guess what, one of them actually cried directly on the phone, which is a drama! ”

"Ahh And then what? Why are you blocking the door, arresting people! I'm going to the supermarket!! ”

James smiled: "Someone has been sent to arrest him, and that person is in Miami." I know you Chinese have a saying... Called to send the Buddha to the west. Why don't you help us review it? Besides, I'm just going to arrest someone, and I don't know why I'm arresting him. ”

"Pull it down, you!" Wang Su pushed James away angrily, "I just told the case analysis and evidence that my blood is boiling, you ask her to go......"

After saying that, Wang Susa ran away.

"Hey!!" James shouted at Wang Su's back, "This time it's free?? ”

Wang Su immediately stopped, turned around and said, "Don't say that I forgot about it." This time... $50,000 bar......"

"What? Didn't this guy help for free?? Caroline's only fondness for him vanished in an instant.

At this time, I heard James shouting again: "Okay, where is the donation this time?" ”

Wang Su scratched his head: "Hmm... Well, I heard that the University Hospital of Miami has a fund for poor pregnant women, so I'll donate it there this time. ”

After speaking, Wang Su ran away without a trace.

This time it was Caroline's turn to scratch her head.

"It's... Donation?? What the hell are you talking about? ”