In this thrilling science fiction adventure—the triumphant conclusion to the Tipping Point trilogy—New York Times bestselling author Alan Dean Foster returns to a near future in which genetic manipulation and extreme body modification have changed profoundly what it means to be human.   Dr. Ingrid Seastrom was once a respected American physician. Whispr, whose body has been transformed to preternatural thinness, was once a streetwise thief. Now, in a world on the edge of catastrophe from centuries of environmental exploitation, they are allies—thrust together by fate to unravel an impossible mystery—even as they are stalked by a relentless killer.   Ingrid and Whispr are hunted fugitives bound together by a thread: a data-storage thread made of a material that cannot exist, yet somehow does.
