Shopkeeper Liu questioned the employees and found nothing unusual, so he had to look for Gu Changsheng with a bitter face: "Third Young Master, I can't find out anything. No one admits it."
"Have you checked their family background and who they have been in contact with recently?" Gu Changsheng asked.
"I checked. I can't do anything about it. How about asking the village head to check the customs?"
"It's just a small matter." Gu Changsheng frowned and turned back to the restaurant, "I'll check it myself!"
…
The waiters in the restaurant are all hired from the town and they know each other well.
Gu Changsheng observed more than a dozen men and found nothing unusual.
Solving cases... He is not good at it. The boss only needs to give orders and someone will give the results.
But today, he had to do it himself. Fortunately, he had a lie detector in his space.
Gu Changsheng turned his back, took out the polygraph and put it on the table. This was a battery-powered polygraph, and the light came on when the switch was pressed.
Everyone looked on curiously.
"Liu Si, come here." Gu Changsheng called.
Liu Si stepped forward and said respectfully, "Third Young Master."
Gu Changsheng placed Liu Si's finger on the card slot of the polygraph. After the machine read the tester's heart rate, pulse and other data, he asked, "Have you given all your salary this month to your wife?"
Liu Si was very surprised: "Third Master, why are you asking this?"
"Just answer." Gu Changsheng said.
"Hand it over." Liu Si's eyes flickered.
The indicator light on the tester lit up, and he smiled: "Liu Si, you lied. Did you pay all the money back home?"
Liu Si was shocked: "Master, how did you know?"
"See these lights? Once they light up, it means you are lying. The more lights that light up, the higher the degree of lying." Gu Changsheng asked again, "Did you scold Manager Liu today?"
"No!" Liu Si shook his head.
The polygraph lit up again, and Shopkeeper Liu glared at Liu Si. Liu Si lowered his head bitterly: "Shopkeeper Liu, I was wrong. I just complained that you doubted me, I really didn't mean anything else."
Gu Changsheng smiled lightly and glanced at the other guys: "Now, come and test one by one. I know the person who drugged you is among you!"
The guys all looked at the polygraph in amazement: "Third Master, you have such a magical thing, like a god, you can see through people's minds."
"That's right. If you admit your mistake now, I can still let you off. But once the lie detector test shows the result, you will have to hand yourself over to the authorities." Gu Changsheng said.
"I didn't drug it, let me try it." The guys were happy to take the test and lined up one by one to prove themselves.
There were more than a dozen guys, and soon the last one was tested.
The man's face was ashen, his hands and feet were trembling, and he didn't dare to move forward.
Everyone knew something was wrong when they saw his reaction. Gu Changsheng said in a low voice: "Wang Er, why don't you say anything?"
“Third Young Master!” Wang Er’s legs softened and he knelt down. “Third Young Master, please forgive me! I won’t dare to do it again!”
"It turned out that you were the one who poisoned it!" Gu Changsheng sneered, and all the guys were angry.
"Wang Er, are you crazy? You actually put poison in the frying pan."
"The Third Young Master was so kind to us, yet you actually did something dirty to us? You are such a scoundrel!"
"… "
Wang Er knelt on the ground, trembling: "It's all my fault for being obsessed. That person said that croton would only cause diarrhea, and then Miss Xia couldn't come to set up a stall. I didn't expect that it would implicate the Third Young Master!"
"Who is that person?" Gu Changsheng asked.
"That person..." Wang Er hesitated.
(End of this chapter)