With her reputation forever tarnished by a youthful indiscretion, lovely Emily Faringdon is resigned to a life of spinsterhood, until she embarks on an unusual correspondence and finds herself falling head over heels in love. Sensitive, intelligent, and high-minded, her noble pen pal seems to embody everything Emily has ever dreamed of in a man. But Simon Augustus Traherne, the mysterious Earl of Blade, is not at all what he seems.

At five and 20, Prudence Merryweather knew very well the risks a woman took by visiting a gentleman in the dead of night. But bearding the notorious Earl of Angelstone in his den was the only way to stop him from engaging her hot-headed brother in a duel. And that was why she found herself ushered into Sebastian's forbidding presence at three in the morning - and thoroughly kissed before dawn.

When a blackmailer threatens her Aunt Zoe, Iphiginia knows she can ferret out the villain. A 26-year-old vixen with the intellect to match her beauty, Iphiginia descends on London society as the dazzling mistress of the missing Earl of Masters—another supposed victim of the blackmailer. But when the missing earl suddenly reappears at a ball, Iphiginia is caught in her own clever lie.

Affair introduces Charlotte Arkendale, an industrious young woman who provides a very special service. Wealthy women hire her to check the qualifications of their suitors. When one of Charlotte’s loveliest clients is murdered, she hires the darkly handsome Baxter St. Ives to be her assistant and bodyguard. But as they pool their powers of deduction and begin to investigate the mysterious circumstances surrounding the murder, they also uncover the force of a powerful, and mutual, chemistry.

Augusta Ballinger was quite sure that it was all a dreadful mistake. The chillingly pompous and dangerously disturbing Earl of Graystone could not possibly wish to marry her. Why, it was rumored that his chosen bride must be a veritable model of virtue. And everyone knew that Augusta, as the last of the wild, reckless Northumberland Ballingers, was a woman who could not be bothered by society's rules.