Elena Cruz and her husband, operative Alejandro Cruz, thought they had finally broken the machine hunting vulnerable girls and rewriting lives. They were wrong. The architect behind Ember is still moving, still protected, and still building power behind closed doors. To end it, Elena and Alejandro have to step into the heart of the system, draw their enemy into the open, and risk the one thing they've fought to keep alive: each other. The Spy Who Burned It Down is a fast, dangerous espionage romance about marriage under pressure, buried networks, and the final war against the people who thought they could erase the truth.