Chen Shi got to the bedroom, looked around, and then lay on the ground to inspect the bottom of the cabinet. He pulled out a ceramic shard and said, “There is a fragment here. There isn’t any dust on it so it should have been broken not too long ago.”

Lin Qiupu lectured the police officers, “You should all learn this kind of spirit where you don’t miss even minute details.”

Chen Shi looked around the bottom of all the furniture and instructed, “Remove the bed.”

Peng Sijue ordered people to move the corpse to the living room first and then move the bed away. There was a small plastic dish under the bed with a few apple slices. The apple had already oxidized and had become discolored. Chen Shi beckoned for an officer to bring the knife.

He took the weapon and compared it. The hole in the apple slice coincided with the weapon’s thickness and dimensions.

The...