"From what I've found." Moriarty rubbed his chin, looking intelligent and calculating at the same time.
"I think the reason for the ghosts existence is the tavern owner's son." He took out a dusty, weathered journal and flipped through its pages.
"The tavern owner's son was a big fan of supernatural and satanic magic. In his journal, he spoke about being able to see the undead, who communicated with him and taught him dark magic."
Ambrose stabbed his crimson great sword through the ground and leaned against it with his arms crossed, listening intensely.
"At one point in time, before the tavern owner's son managed to learn everything about the magic, the town was attacked by the White Plague.
"Desperate, he created a spell that made the ones who died by White Plague rise from their deaths as ghosts."
"I see." Ambrose nodded. "So the thing about the ghosts existing because they have vengeance on someone was false."