A rash of unsolved murders prompts NYPD homicide detective Lt. Charlie Bannerman to join forces with world renowned orchid specialist Dr. Samuel Bloom, a former navy veteran with a host of physiological problems. Together they head off to the Island of Madagascar where they run into Dr. Anna Grenier, a Swiss physician who just lost her forester husband in a suspicious accident on the Island’s west coast. Dietrich Brower, Director of the prestigious Zurich International Association of Naturalists (ZIAN), has just learned of disturbing events that persuades him to enlist the aid of Interpol agent RenÔe Simard, Anna Grenier’s cousin. Simard is instructed to liaise with the covert ZIAN team working inside Tsingy National Park and to get rid of the three interlopers before their nosing around creates a problem. When Bloom and Bannerman uncover evidence that points to ZIAN’s complicity in the movement of cocaine, they conclude that final proof can only be found by visiting ZIAN’s HQ in Zurich. Here, snooping around the ZIAN premises late at night, they make a horrifying discovery. The following day, as pieces of the puzzle fall into place, the two Americans head back to the island where CIA contractor Giles Lamont has arranged for several of his old mercenary buddies to help penetrate the world’s most forbidding piece of real estate. Here, a final terrifying twist of fate not only puts everyone at risk, but reveals the true evil that lurks deep in the heart of Tsingy’s deadly limestone labyrinth.