Nian Jiezhen was already feeling embarra.s.sed enough but she couldn't bring herself to push him away.

After a few minutes, the kiss finally broke.

"I should go." Ren s.h.i.+yuan said in the middle of his pants. If he remained with her any further, he might cancel his flight and leave the next month instead!

Nian Jiezhen nodded lightly, finally allowing him to go. "Take care."

"You too."

After Ren s.h.i.+yuan left, Nian Jiezhen was supposed to go back home but she was suddenly called because of a case.

Just like that, Nian Jiezhen went back to her normal routine in her daily life.

Whenever she got home, she would always miss Ren s.h.i.+yuan's presence. If only she could go visit him but she was so busy with her work. She was not willing to take a small vacation too especially when she was working on unfinished cases.

She didn't have any reason to go back to China until one day, her cousin called her.

"I have seen the video that you sent. It is indeed evidence against her. You should try to contact the local PD in your place." Nian Jiezhen suggested.

"She has done the same crimes in different countries. I believe that this is a serious matter."

Done the same crimes?

"What do you mean?"

"You'll understand if you look into this case."

"Fine. I will do that. I'll get back to you later."

"Thank you, Jiezhen."

After the call ended, Nian Jiezhen decided to look into it. At first, she was doubting Lu Yifeng's words so she decided to ask for a friend's help in the case.

"Her way of killing is very similar to the Widow," Dale said after looking into the case.

The Widow? Wasn't she an international killer that Interpol was after?

"Could she be..."

"There could be a possibility that it is her because of the similarities. She is going from one place to another so there's a big chance that she could be the unsub, " explained Dale.

Since Nian Jiezhen has a connection with the Interpol, she decided to give it a try.

In the end, she was chosen as one of the special agents to help in investigating the case. She had to fly to China to look into it.

Nian Jiezhen decided to give Ren s.h.i.+yuan a surprise. She was so excited to see him. She never expected that she would be able to visit him after three weeks after he left.

---

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"Why are you here?" Xia Meilin was glaring at the woman who was sitting on the shotgun seat of the car.

"I'm on a month vacation so I decided to spend it here." Nian Jiezhen said with a smile on her lips.

Xia Meilin turned to Lu Yifeng with eyes asking for the truth.

"I'll tell you later." He patted her head gently as if he was trying to calm her down. "Su Lei, to Red Garden."

"Yes, sir." Su Lei started driving to the place where they will be having their dinner.

"To have a vacation for a month, aren't you usually busy?"

"Well, it's not a total vacation. I am a.s.signed here to check on a case."

"A case?"

"Yes, Interpol is after an international serial killer. I am one of the special agents a.s.signed here to help your law enforcement to investigate the case." Nian Jiezhen explained.

A sparkle appeared in Xia Meilin's eyes since what she said caught her attention. "How were you able to find out that the killer is in this country?"

"Because of that killer's signature."

"Signature?" Xia Meilin asked with a confused look on her face.

"Signature connotes artists signing their work with a triumphant flourish. The killer's signature, in contrast, is more like an imprint left behind, especially on botched incidents. It can be the result of psychological deviance, but some are just for effect. Some offenders have posed a corpse in a provocative s.e.xual position, carved something on a body, inserted items, or taken a souvenir. It's thought that signatures originate with personality factors rather than arising from what's needed to complete a murder."

"Wow... I never knew that serial killers have those too... May I ask what's the killer's signature is?"

Nian Jiezhen didn't mind telling her some of the information she has since Lu Yifeng has already told her that Xia Meilin might play an important role in how to capture this criminal. "The unsub would always take couples and leave four stabbed wounds on their backs. Because of the depth of the stabs, we are sure that the unsub is a woman but she might not be working alone because those stabs are postmortem. She may have a partner who loves to torture the victims to death. Besides, she won't be able to abduct those couple by herself."

Xia Meilin turned to Lu Yifeng without saying a thing but Lu Yifeng was able to understand the way she looked at him that's why he nodded. There was a big possibility that Yong Biqi and Feng Huiqing was the culprit they were looking for.

"How many have they killed so far?" Xia Meilin couldn't help but ask Nian Jiezhen. To be able to catch the higher rank law enforcement's attention, then it should be something really big, right?

"As of now, we found ten bodies with the similar stabs on the back. At first, we weren't able to connect it because these bodies were found in different countries and different races. Two in Paris, two in Vietnam, two in Canada, four in this country. There might be more bodies since the first bodies that were reported were fifteen years ago."

Xia Meilin was just eleven years old back then so that means that the bodies they found weren't the first because from what she believed, her parents were the first victim. Yong Biqi was already forty-nine years old so if her calculations were correct, she killed Xia Meilin's parents when Yong Biqi was still around twenty-three.

Nian Jiezhen sighed heavily, "To be able to hide from the police for this long, she and her partner are pretty organized."

"Organized?" Xia Meilin furrowed her brows.

"There are two types of offenders, organized and disorganized. Organized killers are likely to be above-average intelligent, attractive, married or living with a domestic partner, employed, educated, skilled, orderly, cunning and controlled. They have some degree of social grace, may even be charming, and often talk and seduce their victims into being captured. They are very difficult to apprehend because they go to inordinate lengths to cover their tracks and often are forensically savvy, meaning they are familiar with police investigation methods."

Xia Meilin turned to Lu Yifeng, "I suddenly want to work with her. Zhenzhen's work is really cool." She smiled before she turned back to Nian Jiezhen, "Zhenzhen, tell me more about the different kinds of cases you handled. What was your hardest case?"

Nian Jiezhen flinched a bit when Xia Meilin called her that way. Did she hear it right?