This short story by Showalter combines three different elements I have seen in other stories:  Atlantis, the Amazons, and vampires.  It is also apparently a follow up to at least one other novel by Showalter, though I didn't feel like I was missing much in the backstory by starting here.  I feel like this story might have been better as perhaps a longer novella though - for those just starting out in the world, it is a rather brief number of pages to get acquainted with the world and its characters.  I liked the story overall, and will be checking out other books by Showalter.