Archaeologist Tess Chaykin and FBI agent Sean Reilly investigate the theft, by four horsemen dressed as Knights Templar, of a coding device that could reveal the order's secrets about early Christian history.

New York Times bestselling author Raymond Khoury returns with a provocative, hard-hitting thriller ripped from the headlines and set at the intersection of science, religion, politics and history…  
 
It appears out of nowhere in the skies above Antarctica—a blazing sphere of light that transforms into a mysterious symbol for all to see. Then, it vanishes. The world is enraptured by the event....

"Istanbul, 1683: Mehmed IV, sultan of the Ottoman Empire, is preparing to lay siege to Vienna, capital of the Holy Roman Empire, when a mysterious visitor arrives in his bedroom-naked, covered in strange tattoos-to deliver a dangerous, world-changing message. Paris, 2017: Ottoman flags have been flying over the great city for three hundred years, ever since its fall-along with all of Europe-to the empire's all-conquering army. Notre Dame has been...