I contemplated for a while before opening my mouth. "Doesn't the imperial court know how to suss out the vampires?"
Harman groaned under his breath. "In all honesty... no, we don't have any reliable methods, your highness."
"Aren't their bodies usually cold?"
"Vampires can manipulate their bodies. If they want to raise their body temperature, it should be rather easy to do so."
"You can feed them holy water."
"They will withstand it even after consuming some."
"Won't their flesh burn away after injecting some divinity?"
"These blood-creations have evolved specifically to live in plain sight among regular humans, your highness." Harman swallowed his dry saliva and carried on. "And their bodies are also that of a normal human."
"What?"
A dazed expression floated up on my face.