They are real. They are the harbingers of the Apocalypse. And only one woman stands between them and us. THE FOUR HORSEMEN is a race-against-the-clock thriller starring Andie Sullivan. As the world's only "culturalist," she is employed by corporations and wealthy individuals to break through the barriers with any culture around the globe. Now, she faces the most challenging and dangerous assignment of her career. Hired by a ruthless businessman to infiltrate the mysterious tribe who serve as the protectors of the Four Horsemen's ancient secret, Andie is plunged into a mysterious world where every answer only opens the door to more questions. With a shadowy government force and a brutal terrorist also vying for the Horsemen's unfathomable power, Andie must collect them all and unlock their mysteries before time runs out.