They'll chase you. They'll catch you. They'll swallow you whole.Even before the frostbite virus started turning people into mindless, flesh-eating monsters, 17-year-old Winter preferred being alone. Crowbar, her diabetic service dog, is the only one she trusts in a world that has never felt safe.However, when her insulin supply is destroyed, Winter is forced to embark on a perilous road trip across Pennsylvania with Eliot, the idealistic leader of a nearby settlement. To survive, they must learn to trust one another, though Eliot is everything Winter isn't: generous, kind, and convinced she's worth saving.As they battle hordes of undead, teenage cultists, and car trouble, a figure from Winter's past resurfaces, threatening not just Eliot and Winter's fragile bond, but also their lives.At the end of the world, the worst monsters are those with human faces.