Do yah think maybe this was some kind of medical center?
Why does it always have to be human sacrifice? Perhaps they were modern thinkers and scientists, maybe even organ transplant harvesters.
Oh! Sorry I wandered off - organ harvesting is a form of human sacrifice.
If involuntary organ harvesting is human sacrifice, then the PRC is still a practitioner of thie gruesome crime against humanity.
Exactly! Just like aliens in SF movies are always evil.
I'll bet all those animal bones were where they experimented, perfecting their technique, before trying it on the human patient*.
They left the human reamins in place, because they still hadn't practiced enough, and he died. A klawyer got wind of what was going on, and they had to flee before he arrived with writs, and didn't have time to tidy up before they fled.
*Called a "patient" because he had to wait for 16 years in excruciating pain, while they practiced on the animals.