In the interrogation room of the criminal police team of the Ningzhou Municipal Public Security Bureau, we are investigating and questioning the key person in this case, nanny Xin Shuhui.

When we asked her what was wrong with the deceased's family recently, Xin Shuhui was a little hesitant for a while.

"There's really nothing out of the ordinary, everything is the same as before, and they gave me five hundred dollars!" Xin Shuhui lowered her head slightly and let out a sigh of emotion.

People who don't have money won't be full-time nannies, and with Xin Shuhui's worth and resume, the people who hire her must be rich people with status.

And this kind of rich man with status is very generous.

This will bring the relationship between the employer and the nanny closer, and will also increase the motivation of the nanny, resulting in a win-win situation.

"Are you sure?" I stared at her intently, and made a very majestic voice.

"I'm sure they're the same as usual, nothing has changed. And they seemed to be in a good mood, so they asked me to make them a dinner table and let me prepare two bottles of liquor. Xin Shuhui said seriously.

"Do you know who they're going to feast for the evening?" I asked.

Xin Shuhui shook her head a little sneeringly, looked at me, and said in a flat voice: "I don't know, I never ask about their work. Excessive involvement of nannies in the private and work life of their employers is a big no-no for nannies and can make employers feel insecure. ”

Xin Shuhui is a professional and experienced domestic helper, with her nearly 20 years of work experience alone, she can get along very well with her employer, and she maintains a very delicate master-servant relationship with her employer.

This kind of relationship requires accumulated experience to be just right, and it is not something that can be mastered by simple nanny on-the-job training and other people's words and deeds.

I fixed my mind and asked in a different way: "Do you know how many guests there are tonight?" Is it male or female? ”

Xin Shuhui's mood has slowly stabilized, and she has slowly adapted to our police investigation and questioning, and the fear and panic in her heart are slowly decreasing.

"I don't know, they told me to prepare three sets of cutlery and put them on the table. Judging from their tone, there should be three guests, but they don't know exactly how many people will come. Xin Shuhui made a very sincere voice.

"What time are you ready for dinner and what time are you leaving?" I repeated a very crucial question.

This is a very commonly used interrogation technique, in the face of a key question, where it is impossible to verify the authenticity of the other party's answer, this question can be repeatedly interspersed in different dialogue environments, especially in the changing mentality of the other party. The questions can be exactly the same, or they can be put it another way.

Generally speaking, when a person answers the same question in different moods, circumstances, times, and places, the answer cannot be exactly the same, let alone a word.

It's like when we tell a story to different people in different situations, it is impossible to be exactly the same word for word.

Not only that, but there will be changes in demeanor, tone, and micro-expressions.

And any change, in terms of criminal investigation, will be infinitely amplified and become the key evidence and clues to solve the case.

"I started preparing dinner at six o'clock, and I left around seven." Xin Shuhui said in a deep voice.

"Where did you go after you left home?" My gaze was still very firmly on her face, staring at any of her micro-expressions.

"My employer gave me five hundred dollars to go out to eat. I didn't eat, I just walked around outside because I didn't know when my employer was going to let me go back. Xin Shuhui said lightly.

I looked at her and asked, "When will you go back?" ”

Xin Shuhui looked at me, nodded, and replied in a deep voice: "Yes, the employer said not to go back before twelve o'clock, if they end early, they will send me a message." ”

"Where have you been? Did you meet anyone? I made up my mind and asked.

"I just walked along the street, casually around the neighborhood, and didn't meet anyone. Although I work in Ningzhou City, I am not a native of Ningzhou City, and I have no relatives in Ningzhou City, and even if I have friends, I will not meet them. Xin Shuhui said and sighed, with a hint of loneliness and bitterness in her words.

A person who works alone outside the home, this feeling of loneliness will never be truly understood.

Although I can empathize with her feelings, I can't bring myself into it.

I took a deep breath and tried to clear my mind in the middle of the night and not become numb from sleepiness.

"Can anyone prove it to you?" I asked her seriously.

"Proof?" Xin Shuhui was stunned by my question, suddenly looked at us, and asked, "What do you prove to me?" ”

"To prove to you, after you go out at seven o'clock, until ten o'clock to go to the wonton stall for three hours, can someone prove to you that you are walking outside?" I said lightly.

After hearing my words, Xin Shuhui immediately became nervous, and her emotions became very excited and excited.

Her round face was a little red with excitement, and her big round eyes widened again.

"You suspect I killed someone?! You suspect that I killed their family?! Xin Shuhui raised her voice and asked a somewhat aggrieved question.

"Miss Xin, don't get excited, we're just asking for a routine question." Lin Zifan beside him smiled faintly and said slowly.

Xin Shuhui's open mouth didn't make any more sounds, she looked at me and Lin Zifan in a daze, and she was a little short of words for a while.

I looked at her expression of wanting to speak, seized the opportunity, didn't give her time to think, and immediately asked, "Besides the wonton stall owner, can anyone prove it to you?!" ”

Xin Shuhui's mouth opened a little wider, but she still didn't make any sound. She thought for a few seconds, slowly closed her mouth, and let out a faint voice with helplessness and grievance: "No one ......"

Lin Zifan and I glanced at each other and took a deep breath.

Xin Shuhui left home at seven o'clock, went to the wonton stall at ten o'clock, and found the deceased at half past ten.

There was a three-hour gap in which no one could give him an alibi.

Theoretically, Xin Shuhui is suspected of committing a crime, especially because there is no alibi, which greatly increases her suspicion of committing a crime.

Next, it depends on the guests of the deceased's family for the dinner that night......