Felicity Fox is a rarity for a woman living in the early 1800s. Not only does she frequent the "gambling hells" where most ladies would not dare to tread, she can also beat any man at his own game. It's no wonder she's gained notoriety as the "Queen of Diamonds". Edward, Earl of Addington, despises gambling and is not exactly enamoured of Felicity Fox either, especially after she tried to swindle his family. Except now the Earl requires assistance from the Queen of Diamonds – and there's everything to play for. But with Edward, will Felicity find she's involved in a more dangerous game than she's ever played before?
