Book 3 of the Bluestocking Brides Trilogy . . .
Lord Lucas Kestrel's anger turns to desire when he meets Miss Rebecca Raleigh. He believes that she's one of the scandalous Archangel courtesans, but he quickly discovers that not only is she innocent she is, in fact, the woman he's been seeking….
Lucas has an agenda. He has to get close to Rebecca, court her, even seduce her, to try to discover if she's smuggling secrets that are threatening England's security! But Lucas, the rake without a heart, hasn't bargained on falling in love with the one woman he can't have.
Harlequin Historical - HH # 767