Two strangers find themselves isolated from their former lives by a plume of lethal radiation that splits California in two. All the flights are grounded, ships can't cross it, the highways are impassible, and Jamie has nothing—no money, no identification, no credit, not even shoes. Can she depend on the kindness of a stranger? Does he need the responsibility? How will they put their lives back together, and who will put the state back together? Half Life is an apocalyptic love story and a chilling possibility.