The next morning, we arrived at the precinct early in the morning and held a brief discussion. At present, there was still no substantial progress in the case and all we could do was wait for Xiao Zhou's results. We sat anxiously until eight when Xiao Zhou’s call finally came in. 

"Is it a match?" I asked, unable to hide the excitement in my voice.

"Song-ge, you’re mistaken,” said Xiao Zhou. “The teeth marks of the murderer and Yi Xi do not match."

I felt as if I had been hit head-on by a truck and the whole world seemed to be spinning, my ears ringing so I almost missed the rest of Xiao Zhou’s words. "Are you sure?" I gulped.

"I'm certain,” he replied. “You can tell the difference with the naked eye. Why don’t I send you the comparison data?"

"It’s alright. Thanks anyway!"

Judging by my expression, Xiaotao already knew the results. "Song...