June 632 A.D.: Deep within the Uranah Valley of Mount Arafat in Mecca, the Prophet Mohammed shares with his closest companions a final and startling revelation. Within days, he is assassinated. September 1789: U.S. Minister to France Thomas Jefferson, who is charged with forging a truce with the violent Muslim pirates of the Barbary Coast, makes a shocking discovery--one that could forever impact the world's relationship with Islam. Present day: When a car bomb explodes outside a Parisian café, Scot Harvath is thrust back into the life he has tried so desperately to leave behind. Saving the intended victim of the attack, Harvath becomes party to a perilous race to uncover a secret so powerful that militant Islam could be defeated once and for all. But as desperate as the American government is to have the information brought to light, there are powerful forces determined that Mohammed's mysterious final revelation continue to remain hidden forever.