like new, signed by both authors, Cussler and Kemprecos on title page, first edition with full number line. In protective mylar cover. A novel from THE NUMA FILES. "Starting with historical background, the authors smoothly move the story into the contemporary plot. The information about genetically altered fish provides enough detail for understanding events without overwhelming readers. Myriad secondary plots supplement the main one, and lots of action keeps the story moving at a swift pace. Cussler and Kemprecos have a gift for fitting history, science, and action into an interesting story, and this book is an example of their best efforts."