During my training, we were made to observe and commit to our memory how different animals feed and make a mess to the environment. We can identify all kinds of animal bites.
I came back to the parlour, Old Li was busy drinking his milk and playing a snake game on his phone.
"This looks like animal work," I said.
Old Li began coughing and he looked at me. "Wow, so a massive beast came and ate every human in this house. Is that what you are saying?"
I did not comment on the matter but continued talking about what I thought. Telling him that the serial killer might be multiple people or organisations that want attention. And some splash of blood on the walls were shapes of organs. In a way, the organs were thrown on the wall and then slid down.
"Good, you make a rookie explanation. The reason I said that any person that has good brain cells can come to that conclusion. But you do good. Now go out and make good investigation"