Nicholas Sansbury Smith is the New York Times and USA Today bestselling author of the Hell Divers series. His other work includes the Extinction Cycle series, the Trackers series, and the Orbs series. He worked for Iowa Homeland Security and Emergency Management in disaster planning and mitigation before switching careers to focus on his one true passion-writing. When he isn't writing or daydreaming about the apocalypse, he enjoys running, biking, spending time with his family, and traveling the world. He is an Ironman triathlete and lives in Iowa with his wife, their dogs, and a house full of books.