About Mark Greaney
Mark Greaney is the author of numerous New York Times bestselling thrillers. He also coauthored, with US Marine Lieutenant Colonel Rip Rawlings, the New York Times bestseller Red Metal. With Tom Clancy, he coauthored Locked On, Threat Vector, and Command Authority. His research for the Gray Man novels has taken him to more than thirty-five countries, and he has trained alongside military and law enforcement in the use of firearms, battlefield medicine, and close-range combative tactics.
About Adam Gold
Abby Craden has been a professional actress and voice artist for over sixteen years and can be heard in numerous television and radio commercials, video games, and audiobooks. She has twice won the AudioFile Earphones Award.