The two siblings first took care of all the corpses and burned them.
Liam chalked this up to them taking some safety precautions in case there was a potential viral outbreak of some kind or some other kind of disease. Just like Alex, maybe they assumed the worst too.
However, he already knew that this was probably not the case. He might not be aware of anything like this out in the open world, but inside the game world, he had seen some corpses that had decayed in the same manner.
While he had been in the dark mage camps, there were several corpses that looked exactly the same. So there was probably someone nearby who was capable of wielding dark magic.
Then what about the ability to mind control? How did that factor in?
Just as Liam was thinking about this, the siblings moved on from sweeping the hospital camp one more time to rescuing the prisoners.