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. Set against the backdrop of a Syria pulsing with fear and rebellion, Damascus Station is a gripping thriller that offers a textured portrayal of espionage, love, loyalty, and betrayal in one of the most difficult CIA assignments on the planet.