Blood That Flows (Teardrop Edition)

Something is wrong with Sweeper's sister.  Her name is London, and she's a vampire.  Sweeper has known this for years, but lately, her vampire sister is behaving strangely.  If only Sweeper could figure out what was different.  She gets a job at a detective agency.  She's pretty sure the detective is a vampire hunter in disguise.  Surely he knows something that could help.This book was written by ...