632 AD. Deep within the Uranah Valley of Mount Arafat, the prophet Mohammed shares with his closest companions a final and startling revelation. Within days, he is assassinated. September, 1789. US minister to France, Thomas Jefferson, 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 cafe, 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 an amazing and perilous race to uncover a secret so powerful that militant Islam could be defeated once and for all without firing another shot or dropping another bomb. But, as desperate as the US government is to have the information brought to light, there are powerful forces just as determined that Mohammed's mysterious final revelation remain hidden forever.