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.

Novelist and professional companion Evangeline Ames has rented a cottage in the outskirts of Little Dixby, far from the London streets where she was recently attacked. Fascinated by the paranormal energy of nearby Crystal Gardens, she finds some pleasurable diversion in sneaking past the wall to explore the grounds. And when her life is threatened again, she instinctively goes to the gardens for safety. Lucas Sebastian has never been one to ignore a lady in danger, even if she is trespassing on his property.

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.

Since his return from war, the Duke of Ashbury's to-do list has been short and anything but sweet: brooding, glowering, menacing London ne'er-do-wells by night. Now there's a new item on the list. He needs an heir - which means he needs a wife. When Emma Gladstone, a vicar's daughter turned seamstress, appears in his library wearing a wedding gown, he decides on the spot that she'll do.