After being honorably discharged as a sergeant in the U.S. Army, David Achord found his true calling in law enforcement. His twenty-five-year career included stints with the Rutherford County Sheriff's Department and the Metropolitan Nashville Police Department. David is the author of the Zombie Rules series.

Graham Halstead is a Brooklyn-based actor and voice artist. His voice work includes animation, commercials, and Audie and AudioFile Earphones Award-winning audiobook narration. His work in the theater includes performances in New York, regionally in Washington DC, and internationally in Edinburgh and London.