A nail-biting zombie apocalypse adventure written by New York Times bestselling author Kristen Middleton. Seventeen-year-old Cassandra Wild thought that living in the chaos of her mother's home daycare and dealing with new feelings for Bryce, her martial arts instructor, was a struggle until her world turned upside down. When an untested vaccine kills more than just a rampant flu virus, Cassie learns how to survive in a world where the dead walk and the living... run!