When Detective Michael Dalton is called to investigate a floater at Little Basin in Islamorada, Florida, he finds a man with a bullet in his head. Dalton is a veteran homicide cop but suddenly he's hitting roadblocks. Someone wants to torpedo the investigation. As the body count rises, Dalton suspects his saboteur is involved in the murders. Trusting no one local, Dalton calls on shady freelance investigator Sam Mackenzie for help. He brings a computer expert on board and their efforts uncover a complicated web of deceit. With each step forward, Dalton knows he must get the killer before the killer gets him.