Vampire Billionaire of the Bayou — Frankie Bow

The Sinful Ladies' Detective Agency has just scored a cushy gig: Doing surveillance for a businessman who claims business rivals are after his trade secrets. But just as Fortune, Gertie, Ida Belle, and Mary-Alice are deciding how to spend their easy money, the unthinkable happens. The Sinful Ladies find themselves teaming up with the bewildered Sheriff Robert E. Lee...only to find that what looks like a ritualistic murder is far from the strangest thing about this case. 

In this modern adaptation of the classic tale The Circular Study, the Sinful ladies encounter a bloody business, a haunted plantation, and an unspeakable family secret.