"The door wasn’t closed?" I mused.

"Yes, I closed it. I was driving at the time so I didn't think too much of it," admitted Mr. Li.

“What about your leg? Were you pinched?" I asked.

"No,” Mr. Li shook his head. “I was pricked!"

I asked Mr. Li to show me his wound but Xiaotao’s presence seemed to make him uncomfortable.

"I'll look from your side of the table,” I laughed. “She won’t be able to see a thing."

Only then did Mr. Li slowly unzip his trousers and expose his thigh. There was indeed a red spot that looked like it had been pricked by something sharp. "Officer, I’m worried that I might catch some disease from that prick. Can you order a test for it?" he asked uneasily.

Xiaotao nodded, "I'll get the coroner to take some blood samples for testing later!"

Of course, this was all to...