Lady Sarah Hampton would rather sew up a wound than tend to her own heart. Or matrimonial prospects. When the small hospital she's been volunteering at faces financial peril, she seeks to save them the best way she knows how—one dare, one wager, and one foolish rake at a time. No matter the risk to herself. If her friend's irritatingly handsome and brutish brother doesn't stand in her way.

Xavier Evans, Viscount Flint may be known as the Dare King to his old chums, but to Lady Sarah, he's the King of Brutes. He'd take offense if he weren't so busy trying to be a better man, the type who rises above insult, never gives it, and protects his family. But when his sister's happiness hinges on her friend's safety, he'll have to figure out how to keep the sharp-tongued and beautiful Lady Sarah—who hates him—safe, too.

Sarah is willing to risk it all, and Xavier will do what it takes to stop her. As the game of dares draws them closer, it reveals a hidden threat, and these enemies must work together or hurt those they love . . . including each other.