Ellen has murder on her mind: an untraceable act of retribution for a horror that shattered her family and her childhood. After years of quietly searching, the time for action has arrived. Leaving her unwitting husband, Pete, she vanishes without a trace, taking to the road in pursuit of a man called Walker—a killer who can lead her to the evil prey she seeks.
With the slimmest of clues, a confused and desperate Pete begins to trace Ellen's path. As he pieces together the truth behind his wife's disappearance, he realizes that his ignorance of Ellen's secrets has not only jeopardized their marriage, but may also cost the woman he loves her life. Certain of nothing but the need to find her, Pete crisscrosses the country in a harrowing race against the clock that ends in a brutal, fiery confrontation on a desert mountain top—a stunnning shocker that will leave you guessing until the very end.