Captives — Edward W. Robertson

Once, Walt Lawson saved the world. Lately, he's lived in peaceful anonymity with his girlfriend Carrie. This morning, she's been kidnapped. Walt has a single lead: the van that took her. Its trail points him up the coast to San Jose, where survivors have banded together against the gangs who've overrun the north. With the aid of a local guide, Walt homes in on the kidnappers, who are days from shipping Carrie far away. But Walt's past is about to crash down on his rescue plans. For six years, Thom James has been on the hunt, blaming Walt for the death of his brother Raymond. Now that Walt's come up for air, Thom finally has a lead -- and he won't stop until he's put Walt six feet underground. CAPTIVES is the sixth book in the post-apocalyptic BREAKERS series.