Precious Liquid

Exploration Stage: Secret Room
From: Huntress
Description: I don’t know why the Shadow and his minions are summoning the souls of maniacs into the City, but I will not let it stand! Whoa! A hunting crossbow just fired at me from the weapons rack. I barely dodged it. Some sort of flask was tied to the arrow. Look for it.
Completed: I swear by my sword that there is blood in this Magical Flask! The second killer is not just a maniac, he used the blood of his victims for alchemist rituals! Or worse.