"If you can, spare the building, many of it's spirits are kind and helpful." The man laughed at the mayor's request inwardly but nodded to his face.
"I can give no promises, but I will do my best." The contract was simple once the townspeople realized who had really bought ownership. Go in, clear both armies and leaders and be out. Any simpler would have been insulting. "Anything special I should know about the spirits who already resided there or it's new residents?" The mayor wiped his sweaty brow and thought for a moment before replying.
"Yes, the necromancer has Undead Knights of all kinds and Abominations. And the Vampire is a pureblood. She has summoned several wolf packs, not werewolves of course, and one of the militia reported sighting a Shadow Walker among her followers." The man nodded without another word and left, leaving the mayor to sigh in relief and grab a drink of wine.
Now the man stood outside the building and waited for the nightly blood shed to begin, listening to moans of the Zombies and Ghouls and then the replying shrieks and growls of the Vampires. Even as he stood there, he could feel the spirits cowering in the places they had determined the safest and the taint of Dark Magic. Grimacing under his brim, he started walking towards the door. Deus misereátur.