"She surfaced too fast. Spluttering, she trod water gently, trying not to splash, trying not to look like prey." Television journalist Callie Brown leaps at the chance to make a documentary on an idyllic tropical island-even though she's not sure about working with Jack Metcalf again. In a remote corner of Australia's Great Barrier Reef, some of the world's most venomous creatures are yielding compounds that could change the face of medical research forever. When nature turns against the island's inhabitants, is it a freak occurrence or something more sinister? As danger escalates, Callie and Jack will have to stop fighting each other and start fighting for their lives. But first, they must work out who among the dwindling group of survivors is determined to destroy them...