Hidden Death

When a severed hand is found in the Florida Keys, Detective Merri Kepke is called to the scene.

She isn't thrilled when the FBI sends an agent, who knows nothing about the Keys, goes strictly by the book, and doesn't have a sense of humor.
A skeleton chained to a bucket of cement proves that a serial killer is dumping bodies in the Keys.

Although she would like to send Agent Chad Marlow back to Quantico, she needs the FBI's resources, and he needs her local knowledge. They are forced to work together, and neither of them like it.