America's Most Deadly Enemy is still loose. . . and he's ready to move.

On the eve of the takedown of the world's leading terrorist, his protégé eluded U.S. forces. . . and now he's racing across four countries in a scenario that could happen tomorrow.

Following his dead mentor's desire to reestablish the Islamic Caliphate, Aziz Abdul Muhammad, hand-picked by bin Laden himself, masterminds a series of attacks on the U.S. energy infrastructure that will reignite the war against the West. As his initial series of attacks creates mass panic, leaving the Northeast and Mid-Atlantic states in terrified darkness, the manhunt is on.

In a unique special operations force, veteran intelligence officer David Cain, along with Air Force Sergeant Emily Thompson and rookie FBI Agent Dave Johnson, leads the U.S. effort to find Aziz and his operations expert. From Camp Delta in Guantanamo Bay to Chicago and the outskirts of Tehran, the force must halt Al Qaeda's attempt to rise from the ashes of its former self—and stop the Inheritor before the rest of his terrifying plan unfolds.