Everyone knows vampires don't exist.
So when Mildred Schmidt, one of Charlie's customers, is convinced that her next-door neighbor's house sitter is actually a vampire, Charlie of course has to step in to see what is really going on.
What she finds is ... disturbing. The house sitter DOES have some peculiar habits-like digging holes in the backyard in the middle of the night.
Surely, they aren't ... graves.
But then Polly, a local teenager, goes missing.
Of course, teenagers DO run away from time to time.
Less explainable is the dead body that then appears in the "vampire's" yard.
Luckily, Charlie is hot on the case, and not a moment too soon as she races to not only find Polly, but to discover the killer before the bodies start to pile up.