Dive With Vengeance - Large Print Author:W. F.Mullen The Florida Keys. Paradise...albeit an environmentally endangered one, for those who can afford to live here. Playground...for well funded visitors, globe-trotting tourists, and aspiring treasure hunters. And Purgatory...for any and all who run afoul of Ralph Calhoun. Dive With Vengeance was written in the Keys, about the Keys, and especially fo... more »r residents of, visitors to, and lovers of the magnificent Florida Keys.« less