CIA case officer Sam Joseph is dispatched to Paris to recruit Syrian Palace official Mariam Haddad. The two fall into a forbidden relationship, supercharging Haddad's recruitment and creating unspeakable danger when they enter Damascus to find the man responsible for the disappearance of an American spy. But the cat-and-mouse chase for the killer soon leads to a trail of high-profile assassinations and the discovery of a dark secret at the heart of the Syrian regime, bringing the pair under the all-seeing eyes of Assad's spy-catcher, Ali Hassan, and his brother Rustum, the head of the feared Republican Guard. .