Finally! A quality, down-to-earth and strong female protagonist. Mercedes (Mercy) is very likable and rational, which are qualities that don't seem to be possessed by female protagonists in this genre.

The book is a little too short (fast readers should be able to finish it in a day). Briggs has established a world with a solid mythos -- paranormal creatures (fae, etc) are slowly coming out of hiding due to advances in human technology (particularly forensics). The "cute" or harmless ones are out in the open, but dangerous or powerful fae (werewolves, vampires, etc) are still in hiding, for now.

The plot arc is handled well, though seems slightly contrived once all the pieces are put together. This is why (for me) it didn't merit a 4 star rating. It was good enough that I'll definitely pick up the second in the series.