Kyle Rexler and Rachel Malloy are becoming an item in Washington, D.C. social circles. Half a world away, Salar Sherzai is finalizing an intricate plan to get his son out of Guantanamo Bay. Rexler put him there many years ago. Sherzai's eldest son is dead. Rexler is responsible for that, too. But Sherzai has three other sons, the willing tools to execute his vengeful plan. On the first day of July, Sherzai waits confidently as he fasts. It is beginning, both Ramadan and his cruel vendetta. His remaining sons, now all full-grown and indoctrinated in his cause, are in America to lead the strikes to free their brother. Sherzai promises ten attacks on U.S. soil, terrorizing Rexler and the nation with public messages containing clues, riddles, and symbols denoting the time, method, and location of each assault. Can Rexler, a former Army Ranger, and Malloy, a veteran FBI agent, decipher the explicit messages and stop the devastating attacks before they occur, while at the same time saving their fractured relationship? And a final unknown problem lurks just beyond Kyle's reach. What is the disturbing and fatal eleventh message... and for whom is it intended?