June 2012. The steamy start of summer in Miami, and rogue homicide detective Brendan Perry finds himself on a grim trail . . . a man’s arm has been regurgitated by an eleven-foot tiger shark at the Seaquarium. Perry has only one solid lead—the arm was recently inked with a mermaid tattoo. Perry locates the artist, who connects him to Dani, a resilient waitress at Clyde’s Hideaway, a seedy roadhouse on the edge of the Everglades.

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Dani proves to be a pivotal connection, and Perry extracts information from her that leads him to Sea Bat, a decrepit houseboat moored in the backwater mangroves of Key Biscayne. Here, Perry aims to find the missing piece to his puzzle while attempting to score his own underhanded payoff from the case.

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Concurrently, the day before their annual jet ski crossing to The Bahamas, a trio of ocean lifeguards in South Beach make a surprising early morning discovery—finding seven kilos of cocaine washed up on the sand. Across the Gulf Stream, a chance encounter gone wrong on the island of Bimini sends all parties headfirst into a deadly witching hour conflict in the Florida Straits . . .