The Blood books center around three main characters: Vicki Nelson, a homicide cop turned private detective, her former partner Mike Celluci, who is still on the force, and vampire Henry Fitzroy, who is the illegitimite son of Henry VIII and makes his living as a writer of bodice rippers. Not only are the three of them caught in a love triangle, but they are, time and again, involved in mysteries with a supernatrual slant - from demons, to werewolves, to mummies - and inevitably must join forces to solve crimes and defeat supernatrual enemies.