"An African coup may force Josh Duffy to choose between his mission and his family in this intense thriller from the #1 New York Times bestselling author of the Gray Man series. Josh Duffy lives by a simple code: Duty. Honor. Family. But sometimes it's hard to know what order the words go in. Josh Duffy and his wife, Nikki, are both working for the State Department's Diplomatic Security Service, providing protection for diplomats in the field. They...