#1 New York Times bestseller Nelson DeMille and his son, award-winning screenwriter Alex DeMille. When Captain Kyle Mercer of the Army’s elite Delta Force disappeared from his post in Afghanistan, a video released by his Taliban captors made international headlines. But circumstances were murky: Did Mercer desert before he was captured? Then a second video sent to Mercer’s Army commanders leaves no doubt: the trained assassin and keeper of classified Army intelligence has willfully disappeared.