After fleeing his home in Lincoln, Test Davis settles in the small town of Saratoga, Wyoming, where he hopes to slip into obscurity. But when his boss's niece, Alyssa, draws him reluctantly into a relationship, he's afraid he won't be able to hide who-and what-he really is. When a horrific confrontation with two co-workers forces Test to go back on the run, he reunites with an old friend, discovers that Alyssa has a secret of her own, and finds the answer to the question he's been too afraid to ask: What am I?