Ariana Fitzroy is destitute, orphaned, and completely alone, and cheats at cards to survive. When Connor Grant catches her in the act, he threatens to expose her, unless she joins his elite roster of spies. When Connor recruits her help on a mysterious task, the pair must work together to track a dangerous target. But Ariana suspects Connor is not telling her everything -- not just about the mission, but also about his past. Will the secrets between them threaten their mission? And will they be able to fight their attraction as they wonder who they can trust?