Brian Fence has a winning combination with Librarian. The main character, Lenna Faircloth, provides the driving force to push the plot across a complex and interesting territory in this Second World fantasy.
The magic system, perhaps not unique, but different enough to draw me into the story without making me feel like I'd seen it all before.
The details in the world provide the pièce de résistance. Well thought out, specific enough when they matter and fading into the background when they don't. Sufficient to reward a careful reader but not all so well camouflaged that the casual reader might find the story wanting.