When I saw the tiny cat paw prints, I applied more soot and found more paw prints on the right arm of the deceased.

This discovery shocked people in the room. Luo Weiwei said, “I remember that the victims did not have a cat at home. Where did these paw prints come from?”

“I’m afraid that’s the key to solving this case!” I proclaimed.

“What? But they’re just cat paw prints!” Luo Weiwei interjected doubtfully. “What can these paw prints prove? That the murderer was a cat? Maybe these were made by a neighbor’s cat after all!”

I pointed to the paw prints and said, “Look carefully, these paw prints are very clean.”

“How is that strange?” asked Luo Weiwei. “Aren’t cats known to be very clean? My own cat at home likes to lick her paws clean all the time.”

“I got it!” exclaimed Huang Xiaotao. “The victims were all in a pool of blood when they were found, but these paw prints weren’t stained with blood at all!”

“Finally! Someone got my point!” I said with a smile.

But Luo Weiwei was still unconvinced. “Maybe it was left before?”

“The paw prints were on the bodies themselves,”...