The three of them came over and saw that there really were a few drops of blood on the ground. Chen Shi took a photo and then took a sample. The blood should have dripped on the ground while the murderer was hiding there with the weapon.

They checked the alley again. Chen Shi looked at the gradually darkening sky. "Aiya, did you notice who hadn’t slept well among those people?"

"I think that they all had red eyes. It should be because they had been drinking... Do you think that the murderer hadn't slept all night after killing them?"

"In the past, there was a case that was solved that way. It was very extraordinary. After committing murder, they’d be in a state of high tension and excitement. At the same time, they’d be worried that they hadn’t handled the scene well, leaving clues behind. The first time that people kill...