"Smell it?" Xu Sa smiled slyly, pulled over the chair next to Su Tong and sat down, and deliberately leaned towards her.

Su Tong wrinkled his nose, leaned back in disgust, and widened the distance between the two, "It's okay to spray any perfume." ”

Compared with perfume, she thinks Xu Sa is still more suitable for the smell of sweat all over his body, which is in line with his character.

"Don't you think this smell is familiar?" Xu Sa didn't care, propped himself on the table with one hand, and looked at her with a smile.

"......" Su Tong glanced at him suspiciously, and tried to sniff again.

Suddenly, a white light flashed through her mind.

"This taste!" Su Tong got up suddenly, "That's what I smelled from that man when I was attacked that night!" ”

Because she was so impressed at the time, she immediately remembered it.

"Where did you get this perfume?" Su Tong asked Xu Sa eagerly, and at the same time recalled the two-day trip yesterday.

They were together almost all the time, except when they were in the perfume shop, Xu Sa went to the toilet halfway......

"Is that the perfume shop? But how do you know which bottle of perfume it is? Su Tong asked repeatedly, eager to ask all the questions in his heart.

"Don't worry, I'll tell you everything you want to know." Xu Sa smiled helplessly, looking at her dotingly, "You are still like this, when it comes to the case, you are in a hurry." ”

"Nonsense! Human life is at stake, the murderer has already killed two people in a row, and I suspect that he is now in an extremely high state, and it is very likely that he will kill again. Su Tong frowned tightly.

The average serial killer, after committing his first murder, will fall into chaos for a while.

Once that sense of chaos wears off, the killer becomes dominated by the urge and pleasure to kill, and then commits the crime again.

As he kills more and more people, the pleasure will become more and more intense, and even addictive to him.

As a result, the interval between their offences will become shorter and shorter.

There was less than forty-eight hours between the second and first murders, and if her guess was correct, the killer would not only kill a third person, but most likely within the next twenty-four hours.

"I bought the perfume yesterday in the perfume shop." Xu Sa restrained the smile on his face and said seriously, "I didn't know that the murderer used this perfume, but I just had an idea after watching the surveillance video that the shopkeeper gave us." ”

Su Tong was slightly stunned, and immediately understood what he meant, "Most serial killers will intentionally establish a connection with the victim before committing a crime because of psychological problems. The second victim received the perfume most likely from the murderer, and you suspect that, given the 'connection' in mind, the killer would have used the same perfume as the victim to satisfy his own fantasies. ”

"That's why you asked for the perfume and deliberately sprayed it on your body to test my reaction?!" After saying it in one breath, Su Tong gasped slightly, but he couldn't control the excitement in his heart.

"I didn't think there was so much truth at the time." Xu Sa shook his head, "I don't know what you said about the theory of 'making connections'. ”

"I'm just relying on the experience I have accumulated over the years of handling cases, and my experience tells me that psychopathic people will do perverted things, such as using the same perfume as the person they want to kill."

Su Tong: "......"

"I was thinking of giving it a try, but now it seems that my conjecture is quite accurate." Xu Sa snapped his fingers handsomely, and the corners of his mouth hooked, revealing a mouthful of white teeth.

Su Tong squinted, only to feel that Xu Sa's white teeth were dazzling.

"In any case, now we have confirmed one thing, and that is that the person who gave the perfume to the deceased is the murderer." Xu Sa leaned back on the chair with his legs and stared at her with a smile, "I'm so smart and have found a new clue for the case, how are you going to reward me?" ”

Su Tong glared at him, took his bag and walked out without saying a word.

Xu Sa was startled, and immediately got up and followed, "This early in the morning, where are you going?" ”

"Go investigate." Su Tong replied without squinting, and went straight downstairs towards the parking lot.

Now that it has been established that Perfume is the connection between the murderer and the victim, there must be some clues in the first victim Bai Xue that they have ignored.

Before the clues are covered up by the killer, she wants to find them.

"Wait, I'm going with you." Xu Sa took a step and stood between Su Tong and the car, his eyes firm.

"What are you going with me?" Su Tong hugged his arms and picked his chin in the direction of the office building, "You forgot, you still have a case briefing in a while, and the leaders are waiting for you to report on the two cases." ”

Xu Sa pursed his lips, thought about it and grabbed Su Tong's wrist, and said non-deniably, "Then you go back to the bureau and wait, and when I finish the meeting, we will go together." ”

Xu Sa's fingers were a little rough, touching the delicate skin of her wrist, which was a little itchy, which made Su Tong blush unconsciously.

"What are you kidding, the clues don't wait for anyone, every minute every night, there is a possibility of being destroyed by the murderer." The words are very reasonable, but with Su Tong's thin red face, it inexplicably gives people the illusion that he is coquettish.

Xu Sa was a little soft-hearted, and his gaze softened when he looked at Su Tong.

"Then I'll tell the leader that new clues have been discovered temporarily, and today's case briefing will be postponed for the time being!"

In any case, he would not let Su Tong operate alone outside the police station.

"Whatever you want." Su Tong awkwardly looked away, pushed Xu Sa away from him, and then hurriedly got into the car.

Looking at Su Tong's somewhat embarrassed figure, a smile flashed in Xu Sa's eyes.

Twenty minutes later, Snow was in the house......

"Two police officers, does the murderer have a clue?" Bai Xue's mother looked haggard, and the death of her daughter seemed to take away all her hopes of life, "Haven't you checked these things of Xiaoxue before?" Why check again? ”

"Auntie, check again because we have new clues." Su Tong held Bai Mu's arm and comforted softly, "Don't worry, we will definitely catch Xiaoxue's murderer." ”

Bai Mu wiped her tears, "With Officer Su's words, I am relieved." Leave it to yourself, I haven't touched anything in her room since Xiaoxue left. ”

opened Bai Xue's bedroom door, and Bai Mu turned to leave, her thin back revealing a sadness.

"Su Tong?" Xu Sa stretched out his hand and shook it in front of Su Tong, who was stunned, "What are you thinking?" ”