It hardly ever rains in Dos Hermanos. Not until one day, when the skies open up and it beings to pour-and it just won't stop. For the first twenty-four hours, the 3,721 citizens of Dos Hermanos will struggle to stay alive. Then things begin to appear out of the storm. They are eyeless, skinless, razor-edged creatures in a thousand different shapes-some as small as a tumor, some as large as a house. They share only two things-a boundless hatred of humanity and an endless, unquenchable thirst. Few will survive. But a handful of extraordinary people will fight these monsters: Ken Mackie, a software genius with a broken spirit. Rose, his bitter, street-smart daughter. Lucy Armbruster, a slightly mad scientist who may be the only one who knows what's really happening. Michael Steinberg, a man who gladly abandons his humanity to become something more and something far worse. Who will live? Who will die? And who will learn the secrets of the Rain?