In this first novella in the series, Selinda finds more than she expects in the Bookstore. The owners (the demon brotherhood) find unexpected value in her too.
You must not mistake these 'demons' for evil fire and brimstone beings btw. They are living covertly in the human world, guarding knowledge of their existence from humankind with utmost secrecy.
Selinda shows such unusual talent she becomes their Slayer - (of demons, strangely enough).
This novella develops when Selinda meets a demon she does not want to slay, and because of him, discovers something long hidden about herself.
But the discovery brings extreme danger to them both.