“Book Descriptions: Sarah and David have survived the zombie apocalypse. They stood side by side and fought the undead, mad scientists, and even bionic monsters until the unthinkable happened. A zombie bite. But not even that could stop them. Now, with a possible cure in hand, they're headed east, looking for a safe zone behind the rumored "Wall." They're feeling pretty optimistic.
That is until Dave stops sleeping and starts lifting huge objects.